* Chỉ chữa câu sai + câu chưa làm.

`3,`

`(?)` Were Nam and you in the English club last Tuesday?

`5,`

`(-)` They didn't always have a nice time on Christmas holiday in the past.

`(?)` Did they always have a nice time on Christmas holiday in the past?

`6,`

`(-)` My father didn't decorate the Christmas tree.

`(?)` Did your father decorate the Christmas tree?

`8,`

`(-)` They weren't late for school.

`(?)` Were they late for school?

`9,` 

`(-)` Mr. Tam didn't take his children to the museum last Sunday.

`(?)` Did Mr. Tam take his children to the museum last Sunday?

`10,`

`(-)` Hoa didn't make a cushion for her armchair.

`(?)` Did Hoa make a cushion for her armchair?

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