It _____ long before we _____ the result of the experiment.
| A．will not be; will know | B．is; will know |
| C．will not be; know | D．is; know |
you must remain calm．
| A．Whatever you may be frightened |
| B．However frightened you may be |
| C．Whatever frightened you may be |
| D．However you may be frightened |
The question we should call in a specialist now was raised by the family doctor.
| A．which | B．who | C．whether | D．when |
Tom have come in person．He came such a long way just to tell us me result．
| A．mustn’t | B．needn’t | C．wouldn’t | D．couldn’t |
We’d say that never before 
so moving a film as After Shock.
| A．we had seen | B．had we seen | C．we have seen | D．have we seen |
As a young man，he didn’t know that he famous later on．
| A．was to become | B．will become | C．had become | D．became |