用所给词的适当形式填空 。

小题1:Will you invite the exchange students          (take) part in the activity?

小题2:The doctor can make Neil            (feel) better than before.

小题3:Our paintings are quite different from              (they).

小题4:Read more, and you            (be) better at English.

小题5:Look ! Simon            (fix) the broken bike for his classmate.

调制解凋器的主要作用是【 】。