Granny Li, let’s help you to carry the heavy bag!—______.

Did you talk back to your mother when you were a child—Yes. But now I realize I was wrong. I really regret _____ that silly thing to my mum.

It was at 12 o’clock _________ they came home fromschool

How does David usually go to work— He ______ drive a car, but now he ______ there to lose weight.

Although I try to talk to my classmates, I still find _____ hard to make good friends with them.