Li Yuchun is very p_________ now.Many young people say she is a super star.

popular 受欢迎的I'm going to Hainan on vacation.　　--- Really? I h_______ you will have a good time.知道不？hope 希望take care of keep up with try them on notmore thanset outWe must( ) the times()our environment is your dutyThe scientists ( )forthe SouthPolelastmonth.你好聪明啊！这个我不会…………keep up withTaking care ofset out