单项选择题
The sailors should do unmooring work when （）the harbor.
A.leaving
B.leave
C.to leave
D.left
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Send the aft breast line （）!
A.shore
B.ashore
C.to ashore
D.to go ashore -
单项选择题
“Ease the strain on the stern line” means “（）”!
A. Heave away the stern line.
B. Take in the stern line.
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D. Heave in the stern line. -
单项选择题
（） the head line!
A. Send out
B. Clear of
C. Make fast
D.A+C
