题干
— ______ he _____ with us this afternoon?
— Yes, he is.
A：Is; go to skate
B：Does; going to skate
C：Is; going to skate
D：Does; go to skate
答案(点此获取答案解析）
C
— ______ he _____ with us this afternoon?
— Yes, he is.
A：Is; go to skate
B：Does; going to skate
C：Is; going to skate
D：Does; go to skate
＝a，C
＝b，|a|＝1，|b|＝2，则C
＝( )
