“I have decided to become an astronomer”, he said. He said that ……………………………………………………….

Đáp án: He said that he had decided to become an astronomer.

Câu trần thuật:

S + said/said to me/ told me + (that) + S + V(lùi thì).

Dịch: Anh ấy nói rằng anh ấy đã quyết định trở thành một nhà thiên văn học.