The role that our army_____ in flood control is very important.

We should consider the students’ request that the school library_______ more books on popular science.

Although he had______ many severe tests during his lifetime, he succeeded at last.

It is not a serious illness. I guess she will ______ soon.

When you learn English, you have to choose which accent to _____, American or British.

The traveler _______ his coat on a stone and _______ down to have a rest.

I told her we weren’t going to be friends any more because she couldn’t ________ .

To keep healthy, most retired people _______ jogging as a regular form of exercise.

The patient’s dangerous condition ____the doctors and nurses many a sleepless night.

It remains to be seen what effects the new educational reform will _________ students.