It’s time________ lessons. But Lily isn’t in the classroom.

—IsTomin the next room?—Well,it’s hard tosay.ButIheardhim               loudly whenIpassed by justnow.

I think Kunming is a good place________.

---I find the more we study, the more difficulty we have ________ out Maths problems.---Oh, I agree with you. Maths is more and more difficult.

–Which hair band do you like best, madam?–I can’t decide now. I really don’t know _________.