Malaysia Airlines Flight 370 ___________ course and turned back toward Kuala Lumpur -- but there were no indications from the pilot that he was doing so.
#86442
A
must have changed
B
could have changed
C
might have changed
D
should have changed.
推荐题目
(2013·山西高三诊断)Honey, you ________ alcohol for they have stopped drinking.
#86569
A
may not have bought
B
mustn't have bought
C
can't have bought
D
needn't have bought
According to the school rules, no student _____go out of the school after eleven o’clock at night without the teacher’s permission.
#87570
A
will
B
must
C
may
D
shall
_______ he was seriously ill, I wouldn’t have told him the truth.
#87834
A
If I knew
B
If I know
C
Had I known
D
Did I know
The man is weak in health, and is advised by the doctor ________more exercise.
#87510
A
taking
B
should take
C
took
D
to take