A. Barry took our advice so he stopped smoking.

B. If we had advised Barry, he would have quit smoking.

C. Barry did not quit smoking because of our advice.

D. Despite being told not to smoke, Barry continued to do.

A. require

B. requirement

C. requiring

D. required

A. curriculum

B. course

C. school

D. class

A. The man suddenly realized that he was being watched by the neighbor.

B. The neighbor was watching the man and he suddenly realized that.

C. The neighbor was suddenly realized the man and watching him.

D. The man suddenly realized that he was watched by the neighbor.

A. compound

B. base

C. change

D. move

A. conference

B. lecturer

C. reference

D. researcher

A. The Internet allows us to connect to other computers and exchange ideas.

B. The Internet exchange ideas and allows us to connect to other computers.

C. The Internet allows us and exchange ideas to connect to other computers.

D. The Internet connect to other computers and allows us to exchange ideas.