I’m really concerned ahout you. If something _______ happen to you call me at once.

Did you get Wechat red(微信红包) during the Spring Festival—Yes. It`s ______ the most popular way of sending traditional holiday presents now.

Whenever you are in trouble, you may ________ Mike. He is helpful.

can’t trust your friend to have a relationship with another person you consider a friend, it’s a clear ______ of a problem in your friendships.”

下列各句中，没有语病的一句是（ ）