单项选择题

3． My brother is going to be a soldier when he _________ ．
A． will grow up
B． grows up
C． is going to grow up
D． shall grow up

A.
A．

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单项选择题

6． They are going to help tourists _________ speak French
．
A． can't who
B． who can-t
C． don-t who ．
D． who do

多项选择题

起升系统主要由（）。

A.滑轮组
B.导向轮
C.钢丝绳
D.支撑架