21. can't it?
22. won't it?
23. have you?
chúc e học tốt!

(thiếu dấu ? nè)
S: the car
O: yesterday
V: taken
active: Did they take the car to the garage yesterday?
chúc e học tốt!
 

took
chúc e học tốt!

C
chúc e học tốt!

7. C
8. C
chúc e học tốt!

S: She
O: the new timetable
V: was heard complaining
active: Someone heard her complaining about the new timetable.
cái này a ko chắc lém! :((

chắc là sai :((