When the students were playing games on the playground, Jim suddenly stopped _____and began to cry, so we stopped _______ what was wrong with him.

People are encouraged to speak openly, but careless words are ____ to hurt others’ feelings.

When she was walkingin the street, she met a friend of _______.

下列各句中加点的成语使用不恰当的一项是( )

It’s said that _____ of the Grade _____ spent plenty of time on the Internet during the holidays.