Rather than______ on a crowded bus, he always chooses to run to school.
| A．riding | B．to ride | C．ride | D．rides |
--- Are you going to the concert tomorrow?
--- ___________I’m not sure whether I could finish my paper before that．
| A．Come off it | B．You’ve a point there |
| C．It depends | D．In my opinion |
The speech was wonderful ______ it lasted too long．
| A．as if | B．for | C．except that | D．except when |
This old professor insisted that he _____energetic enough and that he _____．
| A．be, shouldn’t retire | B．was, not retire |
| C．should be, shouldn’t retire | D．was, should retire |
__________ is always the husband who __________ first when a quarrel comes about between the young couple．
| A．It, gives away | B．This, gives out |
| C．It, gives in | D．That, gives off |
Scientists say it will be five or six years ________ it is possible to test this medicine on humans．
| A．after | B．before | C．since | D．When |