ex. 1
1. hid
2. wanted
3. drew
4. took
5. heard
ex. 2
1.We didn't see a ship
2. The birds didn't fly away
3. He didn't write on the board
4. I didn't talk in class
5. I didn't shut the window
ex. 3
1. Did Mr. Lee drive a car?
2. Did we stand on our desks?
3. Did she cook a meal?
4. Did the dog catch the ball?
5. Did Miss Bell teach us?