We dont know to pay a visit to the old town.A. whetherB. ifC. thatD. which

发布时间：2020-08-17 12:38:35

We don't know      to pay a visit to the old town.
A. whether
B. if
C. that
D. which

网友回答

(答案→)A. whether
B. if
C. that
D. which
解析：宾语从句中，动词不定式前用whether而不用if。
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