Alexander Graham Bell invented_____telephone in1876.
-I drove to Zhuhai for the air show last week. -Is that _________ you had a few days off ?
A good story does not necessarily have to have a happy ending,but the reader must not be left.
Alexander tried to get his work _____ in the medical circles.
Dr. Smith, together with his wife and daughters, ________ visit Beijing this summer.
— Did you go to the show last night? — Yeah. Every boy and girl in the area ________ invited.