without friends the most difficult challenge f

非洲菊232022-10-04 11:39:541条回答

______ without friends ______ the most difficult challenge for Chuck while living on the island.

A．How to survive, is	B．How does he survive, are
C．How does he survive, is	D．How to survive, are

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. _________without friends ___________ the most difficult ch . _________without friends ___________ the most difficult challenge for Chuc _________without friends ___________ the most difficult challenge for Chuck while living on the island. A. How does he survive ... are B. How to survive ... are C. How does he survive ... is D. How to survive ... is 博学儒商1年前3: gerrysky 共回答了25个问题 | 采纳率88%

D. 此句主语为_________without friends ,为不定式作主语（前面加了关系副词）,单个非谓语动词作主语,谓语用单数.
A,C；首先排除,主语从句用陈述句

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