1 . The new tax law came into effect last May, _____ white-collar workers have benefited a lot from it.

A．when

B．through which

C．for that

D．since when

2 . Computer graphics technology has now reached the point, ________ special effects can be used to do just about anything.

A．which

B．whose

C．where

D．when

3 . On the eve of the Spring Festival, I usually stay up until midnight, ________I can set off the firecrackers and fireworks.

A．which

B．when

C．where

D．who

4 . Mr. Johnson, our teacher and friend, ______ invited to attend the meeting, ______ he would deliver a speech to the students.

A．was; which

B．were; that

C．were; where

D．was; where

5 . The picture of the park called up memories of our class trip last year, ________ Mr. Smith began to take charge of our class.

A．what

B．where

C．which

D．when

6 . No wonder young people are fascinated with the film, ________ the youth culture in big cities is wonderfully shown.

A．what

B．which

C．when

D．where

7 . The painting of Apsaras reached a peak during the Tang Dynasty, ________ commercial and cultural exchange was greatly supported by the government.

A．which

B．where

C．when

D．that

8 . Local education departments have created network platform, ________useful courses are shown every day.

A．when	B．that
C．which	D．where

9 . The president of America and Canada hold regular meeting, ______ they can discuss ways to strengthen security cooperation between two countries.

A．which

B．why

C．what

D．where

10 . Don't waste time on jealousy, because life is a long race, ________   your only opponent is yourself in the end.

A．which

B．as

C．where

D．when