单项选择题
A.Keep B.Make C.Have D.Take
Put the（） on the lines.A. rat guardsB. stopping guardsC...
单项选择题Put the（） on the lines.
A. rat guards B. stopping guards C. fenders D. planks
We should （）the national flag when the sun rises.A.hois...
单项选择题We should （）the national flag when the sun rises.
A.hoist B.hoists C.hoisting D.hoisted
The main tasks for sailors on duty are, first of all,（）...
单项选择题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
