Cars play an important role in modem life, but they also cause many problems like air pollution.

Cars play an important role in modem life, but they       also cause many problems like air pollution.

#87845

should

can

must

will

推荐题目

_____ to do the work, I should do it some other day.

#89407

If were I　　

I were　

Were I　

Was I

You don’t have to know the name of the author to find a book. You ____find the book by the title.

#89104

must

need

can

would

Smoking pollutes air. You ______ smoke here.

#87295

won’t

can’t

ought not to

needn’t

After the bell rings, which indicates the ending of the exam, you_____ stay ____ you are until all your papers are collected.

#87746

shall, where

would, where

will, in which

can, what

Bob said he was going to join our club but he didn’t. What a shame! He ______ his mind.

#87666

can’t have changed

mustn’t have changed

wouldn’t have changed

shouldn’t have changed

共2810题