The field research will take Joan and Paul about five months; it will be a long time _________ we meet them again.
A. after B. before C. since D. when
— I phoned you yesterday morning. A girl answered, but I didn’t recognize the voice.
— Oh, it __________ my younger sister. She was in my room at that moment.
A. must have been B. should have been
C. could have been D. may have been
He _______ Alice for ten years.
A. married to B. has married to
C. has married D. has been married to
He hesitated for a moment before kicking the ball, otherwise he ______ a goal.
A. had scored B. scored
C. would score D. would have scored
The river ____are covered with trees is very long
A. which banks B. of which banks
C. whose the banks D. the banks of which
----I missed the first part of the film. It was really a pity．
----You _____home half an hour earlier.
A. should have left B. must have left
C. should leave D. must leave
