For: Se usa para indicar la duración de una acción.

• Ejemplo: “I have been studying for three hours.” (He estado estudiando por tres horas).

Since: Se usa para señalar el punto de inicio en el tiempo desde el cual algo ha estado ocurriendo.

• Ejemplo: “I have been studying since 2 PM.” (He estado estudiando desde las 2 PM).

"I have known her _______ we were in elementary school."

"They have been traveling _______ three weeks."

"She has worked at that company _______ 2015."

"We have been waiting _______ an hour."

"He has been practicing the guitar _______ two hours."

"I have been reading this book _______ last week."

"They have lived here _______ a long time."

"She has been a teacher _______ 2010."

"We have been studying English _______ six months."

"He has been awake _______ 5 AM."

I ___________ (go) to the gym on Sundays.

He ___________ (eat) vegetables at dinner.

They ___________ (visit) their grandparents on weekends.

She ___________ (read) books before bed.

We ___________ (drink) coffee in the morning.

My parents ___________ (watch) TV at night.

You ___________ (wake up) early for school.

I ___________ (study) English every day.

He ___________ (play) soccer on Saturdays.

They ___________ (go) to the beach in the summer.

I ___________ (study) for my exams right now.

She ___________ (talk) to her friend on the phone.

We ___________ (have) dinner at the moment.

They ___________ (work) on a new project.

You ___________ (play) soccer this afternoon.

The children ___________ (not/sleep) right now.

My parents ___________ (decorate) the house this weekend.

I ___________ (learn) how to play the guitar.

He ___________ (drive) to work at the moment.

We ___________ (not/understand) the lesson.

___________ is your favorite color?

___________ do you live?

___________ are you feeling today?

___________ do you usually wake up?

___________ is your best friend?

___________ does your brother do on weekends?

___________ are you going on vacation this year?

___________ do you like to eat for breakfast?

___________ is the weather like today?

___________ do you go to the gym?

(You / like / coffee) ___________?

(They / live / in New York) ___________?

(She / go / to the park) ___________?

(Where / your sister / work) ___________?

(Why / you / eat / so late) ___________?

(How / he / get / to school) ___________?

(When / they / arrive) ___________?

(What / you / do / this weekend) ___________?

This book is ___________ (interesting) than that one.

Mount Everest is the ___________ (high) mountain in the world.

My car is ___________ (fast) than yours.

This test is the ___________ (difficult) of all.

She is ___________ (good) at cooking than her sister.

Today is ___________ (hot) than yesterday.

This is the ___________ (easy) exam I’ve ever taken.

He is ___________ (tall) than his brother.

That movie was ___________ (boring) than I expected.

This is the ___________ (funny) story I’ve heard!

You ___________ study harder if you want to pass the exam.

We ___________ go to the beach tomorrow if the weather is good.

I ___________ speak three languages.

He ___________ be at home right now, but I'm not sure.

She ___________ drive when she was 18.

You ___________ eat so much junk food.

They ___________ help us with the project if they have time.

I ___________ play the piano when I was younger.

You ___________ bring your ID to the meeting.

___________ I open the window?

There are ___________ people in this room.

She eats ___________ chocolate.

I don’t have ___________ time to finish my work.

He talks ___________ in class.

There are ___________ books on the shelf.

I’ve had ___________ coffee today.

There is ___________ sugar in my tea.

I don’t have ___________ money to buy the ticket.

This bag is ___________ heavy for me to carry.

They didn’t get ___________ votes to win the election.

I ___________ (go) to the cinema last weekend.

They ___________ (eat) at the restaurant yesterday.

She ___________ (see) a great movie last night.

We ___________ (not / like) the new book.

He ___________ (write) a letter to his friend.

You ___________ (take) a photo at the party.

The children ___________ (play) outside all afternoon.

I ___________ (do) my homework last night.

They ___________ (have) a great time at the concert.

She ___________ (buy) a new phone last week.

I ___________ (read) a book ___________ she ___________ (call) me.

They ___________ (watch) TV ___________ the power went out.

He ___________ (study) ___________ his friends ___________ (play) outside.

We ___________ (walk) in the park ___________ it started raining.

She ___________ (write) an email ___________ the phone rang.

I ___________ (eat) lunch ___________ you ___________ (arrive).

They ___________ (have) a meeting ___________ I ___________ (finish) my work.

We ___________ (travel) ___________ the accident happened.

He ___________ (work) in the office ___________ his boss ___________ (leave).

They ___________ (not / listen) ___________ the teacher ___________ she ___________ (speak).