根据句意用所给词的适当形式填空

The tractor goes ________ (slow) than the taxi.

用所给动词的正确形式填空

________ (keep) it straight, we must ________ (tie) the tree to the top of the stick.

用所给动词的正确形式填空

________ (hand) it in as soon as the composition ________ (finish).

用所给动词的正确形式填空

Mistakes ________ (may correct) after he ________ (complete) the talk.

用所给动词的正确形式填空

There are still sticks ________ (knock) in.

用所给动词的正确形式填空

Talking ________ (not allow) in class while teacher is giving class.

用所给动词的正确形式填空

Since PRC ________ (found), we Chinese ________ (make) great progress.

用所给动词的正确形式填空

The car ________ (park) near the entrance to the theatre.

用所给动词的正确形式填空

The teapot ________ (fill) with hot tea just now.

用所给动词的正确形式填空

Many forests ________ (disappear) because they ________ (cut) down by human beings.