She didn't answer the phone.She ___ be asleep.
#88930
A
couldn't
B
mustn’t
C
might
D
had to
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Had they known what was coming next, they second thoughts.
#86845
A
may have
B
could have
C
must have had
D
might have had
When it comes to giving his kids the education they deserve, the 51-year-old father knows he never _______ college without financial aid.
#87138
A
could have attended
B
could attend
C
had attended
D
should have attended
These achievements_______ without the contribution of Qian Xuesen, a key leader of the New China's nuclear, missile and so on．
#89859
A
would have been unthinkable
B
would not be unthinkable
C
would be unthinkable
D
would not have been unthinkable
—Excuse me, where are we going to have our class meeting? —I’m not sure. Ask our monitor, please. He __ know.
#87992
A
can
B
may
C
need
D
shall
-----Why didn’t you ring me up?----- Sorry, I forgot your phone number. Otherwise, I _____ long before.
#86911
A
had rung you up
B
must run you up
C
would have rung you up
D
would ring you up