When she realized that the bike______towards her, she quickly turned aside.
| A．ran | B．was running | C．had run | D．has run |
Where she will go and when she will leave _____ what I want to know.
| A．is | B．were | C．was | D．are |
The father as well as his three children ______ skating on frozen river every Sunday afternoon in winter.
| A．is going | B．go | C．goes | D．are going |
Every possible means _______ been taken to prevent the river _________.
| A．have; polluting | B．has; polluted |
| C．has; from being polluted | D．have; being polluted |
When I dropped in, his family _______at the table, talking about something.
| A．sat | B．was sitting | C．have sat | D．were sitting |
--- Has Li Lei finished his work today?
--- I have no idea, but he ______ it when I saw him this morning.
| A．had done | B．would do | C．was doing | D．did |
In the coal mine disaster, most of the workers were killed but John ______ have a narrow escape.
| A．could | B．would | C．was able to | D．can |
For some time now, world leaders _____ out the necessity for agreement on climate change, the world economy and African development．
| A．had been pointing | B．have been pointing |
| C．were pointing | D．pointed |
--- I'd have made a phone call to you, ___________ your telephone number．
--- That’s all right．What was up then?
| A．if I know | B．had I forgotten |
| C．if I hadn’t remembered | D．but I forgot |