单项选择题

I am rather concerned（）her, for I haven't heard from her since last winter.

A. of
B. at
C. with
D. about

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单项选择题

It is said that the famous football star is willing to play for（）would pay him ten million dollars a year.

A. anyone
B. whomever
C. no mater who
D. whoever

单项选择题

It was a fine day,（）we decided to stay at home.

A. so
B. but
C. therefore
D. consequently

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