单项选择题
W: Don’t you feel responsible for the mix-up M: Why should I I have no authority.
A. Unconcerned. B. Upset. C. Confused. D. Responsible.
A. Lack of fresh air. B. Poor quality of building materials. C. Gas leakage in the kitchen. D. The newly painted walls.
A. if B. though C. as D. unless