＿＿＿the people have become the master of their own country＿＿＿science can really serve the people.
| A．It is only then； that | B．It was that； when |
| C．It is only when； that | D．It was when； then |
Little did he care about his own safety,_______he was in danger himself.
| A．if | B．though | C．since | D．because |
Hardly had we got to the station_______the train left.
| A．than | B．as | C．with | D．when |
_______John likes Mary, he does not want her to be his wife.
| A．As long as | B．Much as | C．Before of | D．in spite of |
Mother was worried because little Alice was ill, especially_______ Father was away in Canada.
| A．as | B．that | C．during | D．if |
He doesn’t like to be interrupted if he_______ .
| A．speaks | B．will speak | C．is speaking | D．spoke |