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單項選擇題

After a ship leaves a foreign port, you should （）that country’s national flag.

A.hoist
B.lower
C.hoisted
D.lowered

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單項選擇題

When a ship arrives at a foreign port, you should hoist （）national flag.

A. foreign country’s
B. own country’s
C. A or B
D. A+B

單項選擇題

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

A.lower
B.lowed
C.lowing
D.lowers