题目内容
Do you know ________?
- A.what the matter is
- B.what is the matter
- C.what the matter was
- D.that is the matter
B
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___ is the most useful invention?
A.Do you think which of these |
B.Which of these you know |
C.Which of these do you know |
D.You know which of these |
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B.go through; approved |
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