Question

They don’t seem __________who ________for help.

A．know , to talk

B．know, to talk to

C．to know, to talk

D．to know, to talk to

Answer 1

D

此题第一个空考查：seem to do 似乎做某事，第二个空考查疑问词+不定式作know宾语，句意：他们似乎不知道向谁去求助。故选D。