“I must go now,” the father said to us.
A. The father said to us that he must go thena
B. The father said to us that he had to go now
C. The father said to us that he has to go then
D. The father said to us that he had to go then
Đáp án: D
Trong câu trần thuật: must-> had to
Dịch: Người cha nói với chúng tôi rằng ông phải đi ngay.