Time Expressions
We haven't done our homework_______.
We haven't done our homework yet.
Large blocks of flat ... (appear) in the suburbs.
Large blocks of flat have appeared in the suburbs.
He ... (ride) his new bike all day.
He has been riding his new bike all day.
... you ever ... (be) up a skyscraper?
Have you ever been up a skyscraper?
It's terrible. Mary ... (have) an accident.
It's terrible. Mary has had an accident.
Have you ______ visited Paris?
Have you ever visited Paris?
How long ... you ... (be) her friend?
How long have you been her firend?
She ... (work) since 7 o'clock.
She has been working since 7 o'clock.
I ... (visit) it twice.
I've visited it twice.
You ... (play) computer games since 4 o'clock.
You've been playing computer games since 4 o'clock.
I've had this car_____3 days.
I've had this car for 3 days.
He ... just ... (eat) the last piece of cake.
He has just eaten the last piece of cake.
How long ... you ... (study) English?
How long have you been studying English?
How much ... the world population ... (increase)?
How much has the world population increased ?
You are so dirty! What ... you ... (do)?
You are so dirty! What have you been doing?
Why is it wet here? Has it ______ rained?
Why is it wet here? Has it just rained?
I ... (not see) him since last Xmas.
I haven't seen him since last Xmas.
She ... (travel) for 3 months.
She has been travelling for 3 months.
I know it ... (reach) 7 billion in 2012.
I know it reached 7 billion in 2012.
She ... (write) 2 excellent books.
She has written 2 excellent books.
I've learnt English _____ I was 7 years old.
I've learnt English since I was 7 years old.
... Mike ... (fly) a kite before?
Has Mike flown a kite before?
How long ... they ... (wait) for you?
How long have they been waiting for you?
Where ... you ... (grow) up?
Where did you grow up?
My eyes hurt. I ... (work) on the computer all day.
My eyes hurt. I've been working on the computer all day.