How much is _______ for a schoolbag? —Experts say students should carry_______ more than 10 or 15 percent of their body weight.

Who will teach _____ Chinese next term Can it be a new teacher–Perhaps. But our head teacher hasn’t told us ____ .

Your letter will get ___ attention; they know you’re expecting the answer.

－Dad, may I watch TV－No, you can’t. You _______ finish your homework first.

I don’t know ____________．