they will send us an invitation is not yet known,we hope they will.A

游客2025-07-22 1

问题 ______they will send us an invitation is not yet known,______we hope they will.

选项 A、If; but
B、That; so
C、When; yet
D、Whether; but

答案 D

解析本题考查的是if与whether的用法。句意为：尚不知道他们是否会邀请我们，但是我们希望他们会。引导主语从句时只能用whether，而不能用if。第二处表示转折，用but。故选D。

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______they will send us an invitation is not yet known,______we hope they will.A