1. What were you doing at 7p.m yesterday? ( Quá khứ tiếp diễn )

Cấu trúc : was / were + S + V-ing?

Hoặc :

1. What did you do at 7p.m yesterday? ( Quá khứ đơn )

Dạng động từ thường :

Cấu trúc : Did + S + V_nguyên mẫu + ...?

( Mình thấy quá khứ tiếp diễn là đúng nhất nhé! )

2. Where did you spend your holiday last year? ( Quá khứ đơn )

Dạng động từ thường :

Cấu trúc : Did + S + V-nguyên mẫu 

3. Why didn't you listen while I was speaking to you? ( Quá khứ tiếp diễn )

Cấu trúc : S + was/were + not + V-ing.

What were you doing at 7p.m yesterday? ( QKTD )

Where did you spend your vacation last year? ( QKĐ )

Why didn't you listen while I was speaking talk to you? ( QKTD )