—How can I learn more about computer science? —You can learn by _____ questions.

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—How can I learn more about computer science?
—You can learn by _____ questions. [ ]
A. asked
B. asking
C. be asked
D. ask

答案

举一反三

What"s the matter, Miss Lin?
I am having trouble _____ out who has taken away my book on this desk.[ ]
A. find
B. to find
C. finding
D. found

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_____ some lettuce and green onion into the pancake makes it more delicious. [ ]
A. Put
B. Puts
C. Putting
D. To putting

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根据句意用所给词的正确形式填空。1. He thought carefully before _____ (reply).
2. The police are stopping cars and checking the drivers" _____ (license).
3. All the _____ (member) of the family get together to enjoy the holiday.
4. The children have never been _____ (teach) French.
5. He tried over and over and finally _____ (succeed).

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You must have spent hours _____ it up.[ ]
A. to clean
B. cleaning
C. clean
D. cleaned

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The boy started _______ English three years ago.[     ]
A. learns
B. learn
C. learned
D. learning

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