640. Where is the window ___glass is broken?

　　　 A. which　 B. that　 C. whose　 D. its

639. Is this the factory ____ colour TV sets are produced?

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

638. This is the best factory ___I have visited all my life.

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

637. This is the factory ___we visited the day before yesterday.

　　　 A. where　 B. which　 C. the one　 D. at which

636. Is this the factory ___your father worked?

　　　 A. where　 B. which　 C. of which　 D. in that

635. Is this factory ___we visited last year?

　　　 A. where　 B. in which　 C. the one　 D. at which

634. I remember the day ___I first met on.

　　　 A. which　 B. when　 C. in which　 D. on that

633. It is the young man ____looked for ___caught the murderer.

　　　 A. that; who　 B. that; they　　 C. they; that　 D. they; which

632. I remember the day ___I first came to the college.

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

631. September 18, 1913 is the day _____we’ll never forget.

　　　 A. that　 B. when　 C. on which　 D. on that