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Đáp án + giải :

Complete the questions:

they/work/at school?

⇒ Do they work at school?

*Cấu trúc :

Do + S + $V_{o}$  + O?

_________________________________

he/like/sugar/his coffee?

⇒ Does he like sugar in his coffee?

*Cấu trúc:

Does + S(số ít) + $V_{o}$  + O?

_________________________________

they/play/football/yesterday? 

⇒ Did they play football yesterday?

*Cấu trúc:

Did + S + $V_{o}$ + O?