This software______ protect computers from being attacked by viruses and it took my brother a long time to ______ how to start it.
| A．is intended for; come out |
| B．intends to ; turn out |
| C．is mean to; figure out |
| D．is meant for; work out |
---Oh, it’s you! I ______ you.
--- I’ve just had my hair cut.
| A．don’t recognize | B．didn’t recognize |
| C．haven’t recognized | D．hadn’t recognized |
Great Changes ________in Shanghai since 2000.
| A．have been taken place | B．took place |
| C．had taken place | D．have taken place |
She still failed in the final exam___hard she worked.
A. whatever B wherever C. however D. whenever
Child ______ he is, he can speak four different languages.
A. as B. although C. if D before
I was doing my homework in my bedroom _______the light went out. I did it with a candle on.
| A．which | B．while | C．when | D．where |