Professor Liu has ________ teach psychology since he came to the Central China Normal University

Liu Guozheng, together with Kong Linhui, _____China in men’s table tennis singles event in the Sydney Olympic Games. [ ]

Do you know who took the students to the art and science fair -Well, Mr. Smith ____ .

her father come back,______________.

More than six million guests ________ Shanghai Disneyland Park since last June.