Doctors say that exercise is important for health, but it _______ be regular exercise.
| A．can | B．will | C．must | D．may |
If the rain keeps falling, it will __________ our whole plan.
| A．damage | B．harm |
| C．upset | D．ignore |
As is reported, the floods happening in Thailand __________ thousands of houses and killed many people.
| A．hurt | B．injured |
| C．destroyed | D．damaged |
In the countryside, wood can __________ a fire.
| A．be used to make | B．be used to making |
| C．use to make | D．used to making |
We will be given a（n）__________ to ask questions at the end of the lecture.
| A．presentation | B．explanation |
| C．opportunity | D．possibility |
Every time she tried to argue with her husband, she __________ crying her eyes out.
| A．picked up | B．stayed up |
| C．ended up | D．kept up |