Your father looks tired! — Yes, he worked for _________ after twelve o’clock.

How long have you ____________ your new bike? —For nearly two months.

Teenagers have all kinds of dreams. _____, some students would like to go to the moon some day. [ ]

. As a volunteer, he often goes to the hospital to ________ the sick.

The volunteers __ a lot of help to the community for nearly ten years.