EX 1: Điền trợ động từ ở dạng phủ định.
1. I often .....
like tea.
2. He sometimes
3. You seldom ....
4. They usually.....
5. The bus always.....
6. My brother sometimes.
7. Our friends.....
8. The cat
..
play football in the afternoon.
go to bed at midnight.
...do the homework on weekends.
..arrive at 8.30 a.m.
....finish work at 8 p.m.
...... live in a big house.
like me.