问题

ry Monday morning, all the teachersand students in our school stand at ____ as our national flag is raised

A:on duty; off duty; on night duty
B:on his duty; off the duty; on night duty
C:to duty; from duty; at night duty
D:in duty; out duty; at night duty

正确答案是：

同类题型

hat’s the capital of Finland—Well, I don’t know. !

Let’s pile up the fallen leaves in the corner and _____ the floor.

He doesn’tfeel like ___ anything today..

The old man feels very_________because all his children have gone abroad and his wife _________ foralmost two years.

下列各句中，没有语病的一句是