5437, 5347, 5743 , 5734 , 4537 ,4357 , 4735 , 4753 , 3547,3457,3745,3754,7543,7453,7345,7354.

1 She could play table tennis if my friend asked 

2 Tam doesn't take part in the football match training

3 I must help my parents to work on the farm in the afternoon

4 Students should design and stick to a timetable

Vậy (n +4).(n +7) ⋮ 2 ∀ n $\in$ N

Là con cá

các truyền thống : đoàn kết , tương thân tương ái, yêu nước, ..

1. She was so lazy that she was punished by her teacher.

2. Alice started playing tennis 2 years ago.

3. My uncle is a famous stamp collector.

4. Can I meet you at between 8 am and 9 am?

5. Can you wait for me for a while?

a23

b4

c2

Các số thỏa mãn là $\left\{0;11\right\}$

A=22016−1

chỉ cần đọc đi đọc lại nhiều lần là được