_________ has Liu Xiang taken part in world’s competitions of 110-metre hurdles?— I’ve no idea. Let’s find it out on the Internet.

Hello, Judy. Long time no see. Just check ____ everything is going.— Very well. Hope all is well with you and your family as well.

There are 60 students in my class and 44 of them use weibo veryoften.—44? That means about_______of your classmates are weibo users, right?

My teacher Miss Li Kunming at 8:00 pm last night.

______ is impossible if you put your heart into it.