“I know she was in because I heard her radio, but she didn’t open the door.” “She___the bell.” 
#88102
A
may not be hearing
B
may not have heard
C
must not have heard
D
must not be hearing
推荐题目
The child asked his mother ______ go out to play tennis.
#87811
A
that he could
B
if he could
C
if could he
D
that could he
I was ill that day, otherwise I ____ the sports meet
#86851
A
would have taken part in
B
took part in
C
had taken part in
D
would take part in
But for the heavy traffic, the police ___ the thieves who tried to escape in the stolen car. 
#87591
A
would not catch
B
couldn’t have caught
C
haven’t caught
D
couldn’t catch
Tom always feels it necessary that he ________English.
#87314
A
learns
B
would have learned
C
learn
D
were to learn