We are not sure if it ________ tomorrow. If it ________, we won’t go hiking.

Studies show that MP3 people have made much use of_____ music may be causing hearing loss.[ ]

If I ruled （统治）the world, I would _______ the world ______ everything that is bad.

We all ________ his optimism to the state of the current economy of our country becausewehavefaithinour government. [ ]

I’m against students using mobile phones either at home or school.— I think so. The _____ students play with it, the _____ they do in school exams.