$1.$ How long did he stay there?

$2.$ Linda's mother taught her how to make cake when she was 6.

$3.$ We weren't able to come because we were very busy.

$4.$ Was Hung at home yesterday morning?

$5.$ Yesterday they got up at 9 o'clock.

$6.$ It was sunny last week.

$7.$ My sister didn't go to the museum three years ago.

$8.$ How did he get there?

$9.$ Her father repaired her bike 6 years ago.

$10.$ Linda didn't change her trains at Liberty.

$11.$ Shyn got up at the usual time about 6 am yesterday.

$============"$

*Cấu trúc cho cả bài: Thì quá khứ đơn:

- VỚI ĐỘNG TỪ TOBE:

$(+)$ S + was (I, He, She, It, Danh từ số ít) $/$ were (You, We, They, Danh từ số nhiều) + $...$

$(-)$ S + was (I, He, She, It, Danh từ số ít) $/$ were (You, We, They, Danh từ số nhiều) + not + $...$

$(?)$ Was (I, He, She, It, Danh từ số ít) $/$ Were (You, We, They, Danh từ số nhiều) +$?$

-VỚI ĐỘNG TỪ THƯỜNG:

$(+)$ $S$ $+$ $V$ $(-ed/$ bất quy tắc$).$

$(-)$ S + did + not + V (Bare).

$(?)$ Did + S + V (Bare)?