There are so many viruses on the Internet. If __________ accidentally, the viruses may make your computer break down.
| A．downloading |
| B．to be downloaded |
| C．downloaded |
| D．being downloaded |
He doesn’t spend any more money on clothing than I do, but he manages to look so stylish.
A. therefore B. somehow C furthermore D. otherwise
——I can’t get on with some of my classmates. They just leave me in the cold.
—— . But what’s the reason?
| A．Sorry to hear that. | B．How about that? |
| C．Don’t mention it. | D．Never give up. |
Mr. Lee, who as a carpenter for over 10 years, is now a very famous statesman in this country.
| A．has worked | B．had worked | C．worked | D．works |
Helping others is a habit, you can learn even at an early age.
| A．it | B．that | C．what | D．one |
Vitamin D helps our bodies make a special chemical, and this special chemical, ________, affects our brains, making us feel happy.
| A．in turn | B．in particular | C．in advance | D．in short |