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This problem tomorrow morning. [ ] A.is going to discuss B.will discuss C.is to

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This problem tomorrow morning. [ ] A.is going to discuss B.will discuss C.is to

This problem ______ tomorrow morning.

[]

A.is going to discuss   B.will discuss

C.is to be discussed D.is discussed

试题答案

答案:C

提示:
“be to do”动词不定式作表语有将来的时态意义。

“be to do”动词不定式作表语有将来的时态意义。