单项选择题
A.She should make a complaint.B.She should wait.C.She lost the letter.D.She should never take tests.
A.“免、退”税方法B.“免、抵、退”税方法C.“先征后退”税方法D.免税方法
A.He hasn't finished his reading.B.He has read Chapter 14.C.He has finished Chapter 15.D.He doesn't want to read Chapter 15.