They ___ (build) the treehouse since last week. A. ...

They ___ (build) the treehouse since last week.

A. are building

B. have built

C. build

D. have been building

Select your answer:

Other quiz:

Future Tenses › View

To talk about a sudden decision or an offer, we use

A. The simple future

B. The “be going to” future

C. The present continuous

Grammar › View

Last night, my friend ____ on the sofa

A. is sleeping

B. sleep

C. slept

D. sleeps