题干
—________?
— He's swimming at the pool.
A：What does Tom do
B：Is Tom swimming
C：What is Tom doing
D：When is Tom swimming
答案(点此获取答案解析）
C
—________?
— He's swimming at the pool.
A：What does Tom do
B：Is Tom swimming
C：What is Tom doing
D：When is Tom swimming
34万≈8.9万，