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单项选择题
A.No problem
B.No trouble at all
C.Thank you for asking me about it
D.I can’t remember where I left my glasses
单项选择题
A.so
B.however
C.as
D.because
单项选择题
A.take the place
B.took the place of
C.have taken place
D.have been taken place
单项选择题
A.was first found
B.was first discovered
C.has first been discovered
D.was seen first
单项选择题
A.Who are you
B.What’s the problem
C.Are you Jane
D.Who’s speaking?