—Jack is not in the office at the moment—Oh, he ______ those who are going to take the driving test in an hour.
#62546
A
can have instructed
B
must have instructed
C
must be instructing
D
will be instructing
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— I’m a little tired. Let’s go to the zoo by taxi. —We ________take a taxi. It’s not far from here.
#74623
A
needn’t
B
couldn’t
C
mustn’t
D
can’t
— I phoned you yesterday morning. A girl answered, but I didn’t recognize the voice.— Oh, it ____ my younger sister. She was in my room at that moment.
#62616
A
must have been
B
should have been
C
could have been
D
may have been
—Could I finish it today or tomorrow ?—Either day is OK．Take your time．You _________ do it as you like．
#78139
A
can
B
must
C
need
D
might
He________sleep，although he tried to，when he got on such a hunt for an idea until he had caught it.
#62298
A
wouldn’t
B
shouldn’t
C
couldn’t
D
mustn’t