If we had taken such effective measures much earlier, the river ________ so seriously now.
| A．is not polluted | B．would not be polluted |
| C．had not been polluted | D．would not have been polluted |
----Marx looks nervous.
----So __________ you if you had so fierce a competition.
| A．do | B．did | C．will | D．would |
--- Do you think George has passed the driving test?
--- No, If so, he ______ his car to our college yesterday.
| A．would drive | B．drove |
| C．would have driven | D．had driven |
-Jenny took the 8：00 bus to Guangzhou this morning.
-Really? He＿＿the 9:00 train. It's much more comfortable and safer to travel by train.
| A．could have taken | B．should take |
| C．must have taken | D．can take |
They urged that the library ______ open during the vacation.
| A．must be kept | B．is kept | C．would be kept | D．be kept |
Did Jack take the doctor’s advice that he ________ in bed for a couple of days?
| A．lies | B．lay | C．lie | D．laid |
The officer commanded that the supplies of food and clothes ______ to the flooded area.
| A．should send | B．be sent | C．were sent | D．would send |
Without you, I _______ the first prize in the speech contest. Thank you, John.
| A．can’t win | B．won’t win |
| C．hadn’t won | D．wouldn’t have won |
I’m sorry. __________ for my illness, I would have come to give you a hand.
| A．Were it not | B．If it hasn’t been for |
| C．Had it not been | D．Shouldn’t it be |
She had a computer at home, and her parents desired that she _____all her work at home.
| A．do | B．does | C．must do | D．would do |