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【单选题】
__________ his telephone number， she didn’t know how to get in touch with him．
A.
Forgetting
B.
To forget
C.
To have forgotten
D.
Having forgotten
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参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】My aunt’s business has been doing poorly，but she’s hoping that her__________ will change．
A.
duty
B.
fame
C.
luck
D.
emotion
【单选题】It is __________ that text messaging while driving is dangerous．
A.
necessary
B.
sufficient
C.
obvious
D.
significant
【单选题】My secretary usually opens my post__________ it’s marked“private”．
A.
unless
B.
if
C.
as
D.
for
【单选题】Several novels by Mo Yan __________ into English so far．
A.
are translated
B.
have been translated
C.
were translated
D.
had been translated
【单选题】The pianist didn’t __________ until the last minute before the concert．
A.
turn off
B.
turn on
C.
turn out
D.
turn up
【单选题】The old man，together with his neighbors，__________ the performance when it began to rain．
A.
was enjoying
B.
were enjoying
C.
has enjoyed
D.
have enjoyed
【单选题】My teacher recommended that l__________ as careful as possible when I took an exam．
A.
am
B.
were
C.
be
D.
will be
【单选题】Let’s go to the airport a little earlier __________ we can choose better seats．
A.
by that
B.
so that
C.
for that
D.
now that
【单选题】——I’m sorry about the misunderstanding． 一You__________ apologize，it wasn’t your fault．
A.
couldn’t
B.
mustn’t
C.
wouldn’t
D.
needn’t