China might one day explore other planets, the ______designer of Chang’e-I told China Economic Weekly.
. He must be curious about everything in the lab, for this/that/it is the first time that he has been there, ________?
. You have must practiced speaking English for a long time before the contest is held, ________?
. Mary is barely a diligent girl, as it is the fourth time she has been sleeping in class, ________?
. Brian told you that there wasn’t anyone in the room at that time, ________?
. I think she always disagrees with him, ________?