They don’t seem __________who ________for help.
A.know , to talkB.know, to talk toC.to know, to talkD.to know, to talk to
D
此題第一個空考查:seem to do 似乎做某事,第二個空考查疑問詞+不定式作know賓語,句意:他們似乎不知道向誰去求助。故選D。
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