=>
71. He asked Mary when the next train was.
72. The man said that he liked his new house.
73. She asked Nam if his sister and brother went to the same school.
74. The student said that he hadn't finished the assignment yet.
75. The store detective asked me to open my bag.
76. Mary asked Peter what he wanted for lunch that day.
77. Anna asked her mother if she could have a new bicycle.
78. She asked John how many people there were in his family.
Câu tường thuật dạng Yes/No questions : asked sb if S V(lùi thì)
Câu tường thuật dạng Wh questions : asked sb + từ để hỏi + S V(lùi thì)
Câu tường thuật -> lùi thì
HTĐ -> QKĐ
HTHT -> QKHT
Can -> Could
Asked sb to V : yêu cầu ai làm gì