It is said that sandstorms will become more ________ as a result of global warming.

My cousin read a history book, . [ ]

I will tell my daughter as soon as she _________ back from work.

Which one did he choose from those watches? — He said he _______ the one made in Shanghai.

How about the pollution in the countryside?—Luckily, it’s not as serious as _______ in the big cities.