1 we bought a new car last weekend
-> thì QKĐ
-> có chữ last weekend nhận bt
2 she hasn't written to her grandparents yet
-> thì HTHT có chữ yet nhận bt
-> s + have / has + VPII
1 tables
2 eggs
3 cars
4 ornages
5 houses
6 students
7 classes
8 boxes
9 watches
10 dishes
11 quizzes
12 tomatoes
13 leaves
14 wives
15 countries
1 keys
17 policemen
18 bamboos
19 oxen
20 children
21 teeth
22 geese