The traffic is heavy these days. I ________ arrive a bit late, so could you save me a place?
#88266
A
can’t
B
must
C
need
D
may
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He ______ the key, so we ______ into the office.
#88113
A
hadn’t left; can’t
B
didn’t leave; couldn’t have got
C
hadn’t left; couldn’t get
D
hasn’t left; couldn’t get
The boy         the first prize, but he was so careless as to make a foolish mistake.
#87720
A
must have gained
B
need have gained
C
could have gained
D
shall have gained