Paper bags produced every year are ______ the world’s production of vehicles.
| A．three times the weight of | B．three times weight of |
| C．as three times heavy as | D．three times as heavier as |
With these words, they all ___ to look for the lost child.
| A．set off | B．set up | C．set free | D．set forth |
---Would you go swimming with us? ---____, but I’m very busy now.
| A．No problem | B．I’d like to | C．Of course | D．Sure |
Would you please ___ our drive around the city?
| A．join | B．join in | C．take active part in | D．take in |
This is one of the most interesting film ___ we’ve ever seen.
| A．whihc | B．that | C．in which | D．where |
I’d like another cup of coffee.Add more sugar ___ it, OK?
| A．to | B．for | C．in | D．at |