单项选择题
A. a piece of cake B. a piece of work C. a piece of junk D. a valuable machine
The doctor suggests that a person （） exercises every da...
单项选择题The doctor suggests that a person （） exercises every day if he wishes to be healthy.
A. does B. did C. do D. will do
The birth rate in a city （）to fall as its gross domesti...
单项选择题The birth rate in a city （）to fall as its gross domestic product (GDP) rises steadily.
A. estimates B. anticipates C. assumes D. tends
（）today, he would get there by Friday.A. Would he leave...
单项选择题（）today, he would get there by Friday.
A. Would he leave B. If he leaves C. Was he leaving D. Were he to leave
