2. a lion
3. a kite
4. an egg
5. an apple
6. a banana 

2. I don't have a sandwich 
3. I don't have a lunch box
4. I have a cookie

1.  an                               1. I don't have a sandwich.
2. a                                  2. I don't have a luch box.
3. a                                  3. I have a cookie.
4. an
5. an
6. a

Bài đầu:

2.a         3.a         4.an        5.an       6.a

Bài sau:

2.I don't have a sandwich.

3.I don't have a lunchbox.

4.I have a cookie.