There is a ________ look on her face. She must have seen something horrible.

(09山东卷) 32. ——shall we have our picnic tomorrow? —–______it doesn’t rain.

It’s the protection for the trees ______ really matters, ______ how many trees are planted each year.[ ]

The monkeys escaped ______ the zooyesterday evening.

Little Tom admitted ______ in the examination, giving the teacher his word that he wouldn’t do that again.