单项选择题
All vessels at mooring（）move to the sheltered anchorage.
A.must B.have to C.must be
单项选择题 Typhoon No.5 will（）the next four hours.
单项选择题 Will your show me your（）Bill of Health ,Please?
单项选择题 My ETA at the Eastern Anchorage（）1530 hours.
