—What’s wrong?—I can’t do my homework now. I     my homework in the classroom this morning.

Please tell me how long the meeting has _________.

The workers in HuaShan Mountains have to     rubbish to keep the mountains clean.

A: Can I _______ a book from you? B: Certainly. But you mustn’t ______ it to others. And please remember you can only ______ it for a week.

Alan           late to study for the math test last night.