present perfect continuous

I _______________ English for two hours. I am very tired.

• have studying

• study

• am been studying

• have been studying

How long _______________ this watch?

• are you wearing

• have you been wearing

• have you wear

• did you wore

The roads are closed because it _______________ since yesterday.

• snows

• has been snowing

• has been snowed

• was snowing

William is my best friend. I _______________ him for years.

• am knowing

• have been known

• have been knowing

• have known

It is 7 p.m. and Alfred _______________ yet. He _______________ in the field since morning.

• hasn’t been returning / has worked

• hasn’t returned / has been working

• hasn’t been returning / has been working

• hasn’t returned / has worked

Pete _______________ piano for years but you still can’t play a single song.

• have been learning

• had been learning

• has been learning

• have been learn

How many books________________?

• have,she,write

• has,she,writing

• have,she,writing

• has,she,written

Angelo______________________TV much recently.

• haven't been watching

• hasn't been watching

• haven't been watch

• hasn't been watch

_______ the engineer_________a drawing of the machine for a week already?

• Have,make

• Has,make

• Have, been making

• Has, been making

______ your friends_______ in to the pool for an hour?

• Have, swim

• Has, swim

• Have, been swimming

• Has, been swimming