單項選擇題

We should （）the national flag when the sun rises.

A.hoist
B.hoists
C.hoisting
D.hoisted

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單項選擇題

The main tasks for sailors on duty are, first of all,（）the persons who come on board to do their business.

A.received
B.receives
C.receiving
D.receive

單項選擇題

Where are （）goods carried on board?

A.danger
B.dangerous
C.A+B
D.A or B