18. Tom said that he

A. found

Vietnamese spelling difficult to learn.

B. finds

D. will find

C. finding

19. She said that she that car the previous day.

A. had bought B. buy

C. would buy

D. to buy

20. Charlie said, "I don't know what Fred is doing".

A. He said that he doesn't know what Fred is doing. B. He said that he didn't know what Fred is doing. C. He said that he doesn't know what Fred was doing. D. He said that he didn't know what Fred was doing.

21. Charlie said, "I'm thinking of going to live in Canada".

a. Charlie said that I was thinking of going to live in Canada.

b. Charlie said that I am thinking of going to live in Canada.

c. Charlie said that he was thinking of going to live in Canada.

d. Charlie said that he is thinking of going to live in Canada.