单项选择题
－Hello, may I talk to the headmaster now?－（）
A.Sorry, you can’t B.No, you can’t C.sorry, he is busy at the moment
单项选择题 Tom（）since he lost his job three weeks ago.
单项选择题 — What a lovely day! Why not go swimming this afternoon? —（）
单项选择题 -- Do you mind if I smoke here? ----（）
