A new iphone costs about _________of a second-hand one．
| A．the price of three times |
| B．three times the price |
| C．as much as the three times price |
| D．three times more than the price |
— Jenny, let’s go to the party tonight.
— ______ I have a lot of homework to do.
| A．Good idea. | B．Why not? | C．I think so. | D．I’m sorry. |
Dr. Smith, together with his wife and daughters, _____ visit Beijing this summer.
| A．is going to | B．are going to |
| C．was going to | D．were going to |
The number of foreign students attending Chinese universities _____ rising steadily since 1990.
| A．is | B．are | C．has been | D．have been |
— Why does the lake smell terrible?
— Because large quantities of water ____.
| A．have polluted | B．is being polluted |
| C．has been polluted | D．have been polluted |
Although we have only met ______, I find we have a lot in common.
| A．from time to time | B．in time |
| C．by chance | D．over and over again |