用所.给短语的适当形式填空（10分）

a wonderful experience ,more than ,get bad marks,on earth,all the time

小题1:What _______did you talk about just now?
小题2:Travelling around the space will be _________for us .
小题3:I’m afraid I________in the coming exam.
小题4:He has traveled _______ten cities.
85.His dog follows him everywhere _________.