Perce Blackborow and his companions stayed on Elephant Island for six months before rescue came, so they ________ a lot of difficulties.
#87871
A
must go through
B
may go through
C
must have gone through
D
could have gone through
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But for their help, we        the program in time.
#87503
A
can not finish
B
will not finish
C
had not finish
D
could not have finished
—May I speak to the patient now?—No, you _____. He is too weak now.
#90168
A
needn’t
B
may not
C
mustn’t
D
oughtn’t
If I had worked harder at school, I ___ in a comfortable office now.
#88009
A
would have sat
B
had sat
C
would be sitting
D
could sit
I apologize if I _______ you, but I assure you that it was unintentional.
#86712
A
should offend
B
were to offend
C
had offended
D
offended