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Gun control is a subject _____ Americans have argued for a long time.
| A．of which | B．with which | C．about which | D．into which |
According to my grandparents, it is a good idea to eat chicken soup when you have a cold. __, scientists agree with them.
| A．Sooner or later | B． Once in a while |
C．To be exact | D．Believe it or not |
Wind power is an ancient source of energy we may return in the near future.
| A．on which | B．by which | C．to which | D．from which |
---More and more high-rise buildings have been built in big cities space.
---I couldn’t agree more.
| A．in search of | B．in place of | C．for lack of | D．for fear of |
I have seldom seen my mother ________ pleased with my progress as she is now.
| A．So | B．very | C．too | D．rather |
Jack took the boxes off the little table to make _______ for the new computer.
| A．area | B．room | C．field | D．position |