Ex.1
1. Sitting
2. Getting
3. Taking
4. Driving
5. Stopping
6. Dancing
7. Having
8. Closing
Ex.2
1. Am
2. Are
3. Are
4. Is
5. Is
Ex.3
1. Is studying
2. Is dancing
3. Is listening
4. Is sleeping
5. Am doing
Ex.4
1. Isn't studying
2. Isn't dancing
3. Isn't listening
4. Isn't sleeping
5. Am not doing
Ex.5
1. Is your sister watchinh TV? Yes, she is.
2. Are your friends going to the circus? No, they aren't.
3. Are they playing in the garden? Yes, they are.
4. Is Mark riding his bike? Yes, he is.
5. Are Molly and Sarah singing? No, they aren't.
