I can't _ him in the knowledge of wild plants．As a matter of fact, he' s an expert．
| A．match | B．win | C．compare | D．defeat |
Storm chasing is so dangerous that some chasers are often hurt in accidents ______ by driving in a heavy rain.
| A．having caused | B．caused | C．to be caused | D．causing |
Believe it or not, crying is a way you can imagine ______ pressure.
| A．relieving | B．to relieve | C．relieved | D．relieve |
All the clothes donated by the citizens need cleaning thoroughly before being sent to the earth-stricken area, ______ ?
| A．needn’t they | B．don’t they | C．didn’t they | D．shouldn’t they |
My friend has returned from the UK. She ______ at Oxford for four years, during which we communicated with each other on the Internet.
| A．studied | B．has studied | C．had studied | D．has been studying |
What he said at the meeting made Mary rather embarrassed, so he felt that he ______ differently.
| A．might express | B．should express |
| C．could have expressed | D．must have expressed |