I stood there patiently until he ________ his work.
|
A．has finished |
B．would finish |
C．had finished |
D．finishes |
It will be a long time ______- he returns.
|
A．until |
B．before |
C．when |
D．after |
_________ of us knows how many of them have been killed in that accident.
|
A．None |
B．No one |
C．Not all |
D．Not a one |
The natives could live for thousand years in the desert land _______ a foreigner could starve.
|
A．on which |
B．which |
C．in that |
D．where |
As we all know, Jack is experienced _____ the problem of this kind.
|
A．to work out |
B．at working |
C．at working out |
D．for working out |
I could have helped him out, to tell the truth, I _____ too busy.
|
A．am |
B．was |
C．have been |
D．had been |
