It is certain that he will do all he can ______ us.A、helpB、helpingC、to helpC此

游客2025-07-01  4

问题 It is certain that he will do all he can ______ us.

选项 A、help
B、helping
C、to help

答案 C

解析 此句考查动词不定式。本句中,that引导的从句宾语为all,其后he can是定语从句,这里 to help us做目的状语。
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