Radar enables the pilot of an airliner to take off, fly and land in _____.
| A．danger | B．comfort | C．continuity | D．safety |
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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 |
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