$\text{1. was }$
$\rightarrow$ QKD - dạng tobe - S số ít - was
$\text{2. went }$
$\rightarrow$ QKD - yesterday - V2/ed
$\text{3. didn't go }$
$\rightarrow$ QKD - last - câu (-)
$\text{4. did you do }$
- $\text{did }$
$\rightarrow$QKD - last - Câu hỏi - đảo did lên đầu - V nguyên
$\text{5. bought }$
$\rightarrow$ QKD - last year - Ved/ V2