单项选择题
I will wait for Utopia（）before getting underway.
A.clear B.to clear C.clearing D.cleared
单项选择题 I’m manoeuvring（）difficulty. Please keep well clear（）me.
单项选择题 I’m on fire and have dangerous cargo on board. The most emergent assistance in this case would be（）.
单项选择题 If the ship is alongside the wharf, what kind of（）is used?
