It is necessary to explain your theory _____, otherwise the audience won't make sense of what you are trying to get across.
| A．on purpose | B．at length | C．at random | D． on average |
The reason _____ he was late for the meeting was ____ he was held up by traffic jam during rush hours.
| A．why; because | B．that; that |
| C．why; that | D．that; because |
Don’t blame yourself too much. Everyone has his ______ and weaknesses.
| A．powers | B．strengths |
| C．forces | D．energies |
_____ in a heavy snow, he didn’t get there in time.
| A．Catching | B．Catch |
| C．Caught | D．To catch |
Seeing the ______ sight, the girl was nearly _______ to death.
| A．terrifying; terrifying | B．terrified; terrified |
| C．terrifying; terrified | D．terrified; terrifying |
It suddenly ________ me how we could improve the situation.
| A．got | B．struck |
| C．beat | D．occurred |