—Will you go home tomorrow evening
—No, I am going to a lecture, or at least, I am planning（）

单项选择题That our environment has little to do with our abilities, characters and behavior （）central to his theory.

A. is
B. are
C. has been
D. have been

单项选择题In phrases like go swimming, go shopping, or go fishing, the -ing participle is used （）

A. as a command
B. as a purpose
C. for concession
D. for emphasis