单项选择题
Vessel（）still to bunker 50 tons of fresh water.
A.have B.have been C.has been D.has
单项选择题 The ship’s bearing is 145°（）the lighthouse.
单项选择题 All vessels at mooring（）move to the sheltered anchorage.
单项选择题 Typhoon No.5 will（）the next four hours.
