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`67`.D.They were led because of die heat.("For the second day in a row, there will be no classes because of the heat wave that has hit our city." )

`-`The notice states that there will be no classes today due to the heat wave and mentions that it is the second day in a row this has happened, indicating that yesterday's classes were also led for the same reason.

`->` `D.`

`-`

`@` dẫn chứng: câu `1` dòng `1`

`=>` there will be no classes because of the heat wave that has hit our city.

`=>` các lớp học bị hủy do những cơn sóng nhiệt.

`-`

@magnetic