The new teaching building ______ by the end of last month.
| A．has been designed | B．had been designed |
| C．was designed | D．would be designed |
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 |
Going on a trip into space must be quite exciting experience.
| A．/ ; the | B．the; the | C．the; an | D．/ ; an |