题干
一 Is Mr. Green swimming in the sea?
一
A：No, she doesn't.
B：No, he isn't.
C：No, she isn't
答案(点此获取答案解析）
B
一 Is Mr. Green swimming in the sea?
一
A：No, she doesn't.
B：No, he isn't.
C：No, she isn't
,其中
为虚数单位,
( )
