Ex3.
1. Phong said that his parents were proud of his good mark.
2. Lan said that she couldn't tell you about her problem.
3. They said they would be very busy the following day.
Ex4.
1.Tom asked Mary if she had called him the night before.
2. Wiz said to her friend if she liked to attend the couse with her.
3. They asked me if I tried my best to win that game with them.
4. She asked me if it would rain the day after.
Note: Nếu sai thi xin lỗi. Đây là trình độ của 1 người ngu TA :/