问题
选择题
________ parents say and do has a lifelong effect on their children.
A．That
B．Which
C．What
D．As
答案
答案：C
C [what引导主语从句，同时充当主语从句say and do的宾语，具有双重功能。]
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________ parents say and do has a lifelong effect on their children.
A．That
B．Which
C．What
D．As
答案：C
C [what引导主语从句，同时充当主语从句say and do的宾语，具有双重功能。]