—Are you still busy?
—Yes，I________my work，and it won't take long.
| A．just finish | B．am just finishing |
| C．have just finished | D．am just going to finish |
The train is to start soon and Mary hasn’t turned up． What _____ have happened to her?
| A．can | B．might | C．may | D．should |
Had it not been for the fact that she ____ in the accident, she ____ in the race．
| A．got injured; would have competed |
| B．had got injured; would compete |
| C．would be injured; would have competed |
| D．should be injured; would compete |
I don't think a warm winter always has a negative influence on our life, _____?
| A．do I | B．does it | C．hasn't it | D．don't I |
------Did the policeman let you in?
------No, ________ I told him who I was．
| A．Unless | B．Once | C．as though | D．even if |
I called him many times, but I didn’t get through, maybe his mum _on the phone all the time．
| A．talked | B．was talking | C．has talked | D．had talked |