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

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

单项选择题A lot of people could fall ill after drinking contaminated water.

单项选择题In 1845 Sarah Mather invented a submarine telescope that could be used to locate and study underwater objects.

单项选择题Patricia stared at the other girls with resentment．