1.Mr. Ba said that he had bought a blue shirt for me.

2.The clerk told him that he would get back to him as soon as possible.

3.Mary told David that she and he could be the winners in this game that day.

4.Miss Minh said that she was watching a special show then.

5.Mr. Linh told us that he wouldn't tell anybody about our secret.

6.He said that he had not speak to him the day before.

7.Jim told me that I ought to go to see a doctor to check my health.

8.Pete said that he had been born in New York.

9.The notice said that breakfast would be served after 10.30.

10.An and Thanh said that they had spent their holidays in Hawaii the previous year.

11.Tung told his friend that he was a new comer here and had few friends.

12.The doctor told Miss Hoa that she was not strong because she had been ill for 5 days.

-Câu 1: Câu gián tiếp thì HTHT->QKHT

-Câu 2,5,9: Câu gián tiếp thì TLĐ (will->would)

-Câu 3: Câu gián tiếp với động từ khuyết thiếu can->could

-Câu 4: Câu gián tiếp thì HTTD->QKTD

-Câu 6,8,10 : Câu gián tiếp thì QKĐ->QKHT

-Câu 7: Câu gián tiếp với động từ khuyết thiếu ought to->giữ nguyên

-Câu 11,12: Câu gián tiếp thì HTĐ->QKĐ