单项选择题
— What a lovely day! Why not go swimming this afternoon? —（）
A.Because it’s raining. B.Have a good time! C.Why do you go swimming? D.It sounds nice!
单项选择题 -- Do you mind if I smoke here? ----（）
单项选择题 — Has Mr. Smith had an accident? —（）
单项选择题 She was so interested in the book that she（）it for three hours before she realized it.
