A. foreign country’sB. own country’sC. A or BD. A+BWhen……

单项选择题We should （）the national flag when the sun sets.

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

单项选择题When you hoist national flag, you should hoist it in （）place.

A.outstanding
B.secret
C.A or B
D.A+B

单项选择题A life-buoy should be （）at the gangway door.

A. locate
B. located
C. locating
D. to locate

单项选择题“In no time” means （）.

A. have no time
B. in a minute
C. a long time
D. a short time

单项选择题“Stand by the gangway” means “（）”.

A. Stand at the gangway
B. Wait at the gangway
C. Get the gangway ready
D. Keep on the gangway