—Excuse me, _____ is Dalian from Beijing ?—It’s about three hours by car.

-_______students are there in your class, Mr Li?  -Fifty. 

______ swim in the lake. It’s dangerous (危险的).

—Would you mind _______here?—I’m sorry about that. I’ll go somewhere else.

--- _________ robot is yours, the big one or the small one?--- The big one.