A few minutes earlier and we _____ the rain.
| A．have caught | B．had caught | C．could have caught | D．were to catch |
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 |
She sat there without her shoes on, ________.
| A．watching | B．watched | C．looking | D．looked |