— The terrible accident is under investigation．
— Actually, quicker action _____ those workers trapped in the mine．
|
A．might have saved |
B．must have saved |
|
C．should have saved |
D．could have saved |
I have been living in the United States for twenty years, but seldom _____ so lonely as now．
|
A．have I felt |
B．I had felt |
C．I have felt |
D．had I felt |
In the study of modern science, there are many cases _____ soldiers can teach officers．
|
A．when |
B．who |
C．which |
D．where |
— Why didn’t they complete the task in time?
— Because it was not until late afternoon _____ they began to solve the major problem．
|
A．when |
B．that |
C．before |
D．which |
Your story is perfect; I’ve never heard _____ before．
|
A．a better one |
B．the better one |
C．the best one |
D．a good one |
We have a wide selection of sweaters that will appeal _____ all ages, and in particular the teenager market．
|
A．for |
B．in |
C．to |
D．on |
