Nowadays Wechat is____used by people for communicating, sharing, chatting, and so on.

No conclusion _________ about the new product until the result of the experiment has been announced

what’s wrong with Simon — He is feeling becausehe didn’t pass the exam.

Lily, is your cousin in Year _____, too—No. She is in the _______ grade this year.

driving, which was once a occurrence,is now under control.七彩教育网