问题
单项选择题
We shall send a（）to the bow. Because the fog is too thick.
A.watchman
B.look-out
C.look out
D.looker
答案
参考答案：B
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We shall send a（）to the bow. Because the fog is too thick.
A.watchman
B.look-out
C.look out
D.looker
参考答案：B