单项选择题

______ you are free, why not go skating with us

A．Because
B．Since
C．As
D．For
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单项选择题
I don't know what illness he suffered from, but I do remember he mentioned ______ in hospital last year.
A．to have been
B．to be
C．having been
D．being
单项选择题
There are ______ custom tailors and dressmakers in the U.S. than in European countries.
A．far fewer
B．so fewer
C．very fewer
D．too fewer
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