单项选择（每题1分）—Listen！It is raining.—Oh， really！ I______ it at all.
#103629
A
didn’t realize
B
don’t realize
C
haven’t realized
D
hadn’t realized
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By the time he realizes he ______ into a trap, it’ll be too late for him to do anything about it.
#102277
A
walks
B
walked
C
has walked
D
had walked
Good heavens! There you are! We＿＿anxious about you, and we ＿＿you back throughout the night.
#104428
A
are； expect
B
were； had expected
C
have been；were expecting
D
are； were expecting
—What a pity! You should have urged him to hand in his English homework.—I _______. But he wouldn’t listen to me.
#104233
A
have done
B
did
C
had done
D
do
I ____ go to bed ____ the telephone rang.
#103278
A
was about to, when
B
was going to, while
C
would, when
D
was to, while