--- Do you think we should accept that offer?
--- Yes, we should, for we ___such bad luck up till now, and time __ out.
| A.have had; is running | B.had; is running | 
| C.have; has been run | D.have had; has been run | 
I’d appreciate _____ if you would like to teach me how to use the computer.
| A.that | B.this | C.it | D.you | 
The government has to close those small factories to prevent the water of the river ______.
| A.polluting | B.from polluting | C.being polluted | D.polluted | 
There are _____ products to be sold in the factory store. Which of the following is not correct?
| A.a large number of | B.a large amount of | C.quantities of | D.a great many | 
He did not regret saying what he did but felt that he _____ it differently.
| A.could express | B.would express | 
| C.could have expressed | D.must have expressed | 
--Excuse me,_________? --That’s £200 altogether, sir.
| A.what does it cost | B.is it the right amount | 
| C.could I have the bill | D.can I place an order |