620. The factory ___we work is very big .

　　　 A. that　 B. which　 C. where　 D. who

619. The girl ___father lives in Beijing won the first prize in maths..

　　　 A. who　 B. whose　 C. whom　 D that

618. This is the man ___we went to the cinema.

　　　 A. with that　 B. with whom　 C. with who　 D. who　

617. This is the students, most of ____are very active.

　　　 A. that　 B. them　　　 C. which　　 D. whom

616. That is the room, ___is very empty.

　　　 A. that　 B. which　 C. it　　 D. as　

615. This is the things about ___we’re talking.

　　　 A. which　 B. that　 C. X　 D. them

614. This is the building, in front of ____there is a dog lying on the ground.

　　　 A. that　 B. which　 C. it　 D. X

613. This is the thing ___he referred to.

　　　 A. who　　 B. whom　　 C. X　 D. what　

612.I received the news ____Xiao Ping had passed away.

　　　 A. what　 B. that　 C. which　 D. in which

611. We know the fact ___he has gone to college.

　　　 A. that　 B. which　 C. what　 D. why