The new discovery _______ be of great service to mankind.【单选题】

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The new discovery _______ be of great service to mankind.

A. is bound to

B. is bound for

C. be bound to

D. be bound for

参考答案:

A

be bound to:注定要,一定会。本题中主语是 The new discovery ,所以谓语动词要用is。句意:这项新发现对于人类必定大有用处。

英语考试