单项选择题
The used old small typewriter is really （）.
A. a piece of cake B. a piece of work C. a piece of junk D. a valuable machine
单项选择题 The doctor suggests that a person （） exercises every day if he wishes to be healthy.
单项选择题 The birth rate in a city （）to fall as its gross domestic product (GDP) rises steadily.
单项选择题 （）today, he would get there by Friday.
