Giúp em vớiiiiiiiiiii

9. Nam didn't go to school last Saturday.
=> Nam was absent from school last Saturday.
10. My house is the oldest house on the street.

=> No house on the street is as old as mine.
11. It takes my mother half an hour to cook lunch.
=> My mother spends half an hour cooking lunch.
−It takes + S + time + to do sth + O.
=> S + spend (s) + time + Ving + O.
12.Our summer vacation lasts three months.
We have a three month summer vacation.
−HTĐ ( CKĐ ) :S + V (s / es) + O.
−Tạm dịch : Chúng tôi có một kỳ nghỉ hè ba tháng.
13.These naughty students like computer games better than school lessons.
=>These naughty students prefer computer games to school lessons
−S + prefers + V-ing + to + V-ing
−S + prefers + N + to + N
14. Learning English is very difficult for my brother.
It is very difficult for my brother to learn English.
−Ving + be + ( adv ) + adj + ( for sb ) + O.
= It + 's / is + ( adv ) + adj + ( for sb ) + to do sth + O.

Happy Christmas =)).