Tom’s desk is always clean and tidy. —Yes, he hisschool things every day.

I don’t know if his uncle _______.—I think he ________if it doesn’t rain.

you worked here since you graduated—No, I ____________at a factory in Beijing for sixyears.

Leaves are found on all kinds of trees, but they differ greatly ________size and shape.[ ]

________ three times，but she still couldn’t follow what the old man said