At six o'clock, Mike was reading the document
Question: Make questions for the underlined part of the sentence.
At six o'clock, Mike was reading the document.
Question: Make questions for the underlined part of the sentence.
At six o'clock, Mike was reading the document.
Đáp án: When was Mike reading the document?
Giải thích: at six o’clock (vào lúc 6 giờ) => hỏi thời gian => when
Dịch: Mike đang đọc tài liệu khi nào?