问题
选择题
-When did you go to the States?
-I remember ________ there when I was ten.
A．having taken
B．to be taken
C．being taken
D．to take
答案
C
主语I和take 是被动关系，所以用动名词的被动式作宾语。
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-When did you go to the States?
-I remember ________ there when I was ten.
A．having taken
B．to be taken
C．being taken
D．to take
C
主语I和take 是被动关系，所以用动名词的被动式作宾语。
，求该波的波速。