I can _____ some noise while I’m studying, but I can’t stand very loud noise.

—What worried him so much?—His hair’s            grey.

We can’t            against other countries in trade if we don’t develop our national economy(经济).

As a young man, he’d rather have a room of his own, however small it is, than ______ a room with someone else.

With the college entrance examination      near, both the parents and the students are more and more anxious.