相关考题
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单项选择题
()social instruction on cargo securing.
A.Has
B.Had
C.Have
D.Having -
单项选择题
Go ()this ladder and walk aft.
A.down
B.to
C.up
D.in -
单项选择题
The first cabin astern of the saloon is().
A.he
B.him
C.his
D.they
