China is seeing ______ growing trend in the number of people owning pets and ______ recent survey finds that one in 13 Chinese now keep animals.

Cars play an important role in modern life, but they ______ also cause many problems like air pollution.

What has happened to Jason–He was ________ by the police and taken to the station for questioning.

I’m afraid that sweater is too expensive__________.

Since nobody gave him any help, hehave done the research on his own.