3.______ the morning from 0800 to 1200 chief officer is on duty. A. on. B. in. C. during. D. with.
A.on.
B.in.
C.during
D.with.
正确答案是B
3.______ the morning from 0800 to 1200 chief officer is on duty. A. on. B. in. C. during. D. with.
A.on.
B.in.
C.during
D.with.
正确答案是B