There should be laws that prohibit smoking around children.()

单项选择题I am sure to tell you that there's no danger.

单项选择题There is an abundant supply of cheap labor in this country.()

A. a steady
B. a plentiful
C. an extra
D. a meager

单项选择题The landscape can change abruptly after a rainstorm in the Great Sahara Desert.()

A. quickly
B. completely
C. gradually
D. slightly

单项选择题I didn't help him. I would have however didn't have the money.

单项选择题I hope you have left none of your belongings in the hotel.()

A. documents
B. possessions
C. children
D. clothes