I think he must be writing his essay at home now, ______?
| A．is he | B．isn’t he | C．do I | D．mustn’t he |
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 |
—How do you like his plan?
—It may be so in _ ____ theory, but how will it work in ______practice?
| A．the; the | B．／; ／ | C．the; ／ | D．／; the |