用所给动词的适当形式填空：

( go, expect, repeat, sing, be, arrive, forget, tell, enjoy, break, see)

We mustn't allow this kind of mistake ________ again.

用所给动词的适当形式填空：

( owe, get, reach, do, serve, sentence, recover, suffer, discuss, disturb)

The lady ________ from cancer was operated on just now.

用所给动词的适当形式填空：

( puzzle, rebuild, force, base, mark, store, follow, face, encourage, understand)

The news of the safe ________ open astonished all of us.

用所给动词的适当形式填空：

( take, smoke, drink, found, break, show, explore, catch, wash, understand)

Do you mind my ________ here? Of course not.

用所给动词的适当形式填空：

( use, operate, work, fall, eat, produce, give, move, understand, walk, play)

A factory ________ radios and TV sets is being built now.

用所给动词的适当形式填空：

( use, operate, work, fall, eat, produce, give, move, understand, walk, play)

How can I make myself ________ since I can't speak English?

用所给动词的适当形式填空：

(employ, wait, happen, break, visit, play, take, save, learn, ask)

By the end of last term they ________ about 600 English words.

用所给动词的适当形式填空：

(employ, wait, happen, break, visit, play, take, save, learn, ask)

He never asked me what ________ in fifty years.

用所给动词的适当形式填空：

(employ, wait, happen, break, visit, play, take, save, learn, ask)

The students ________ the farm in a month.

用所给动词的适当形式填空：

(employ, wait, happen, break, visit, play, take, save, learn, ask)

I don't know who ________ the window. Can you tell me?