2.
1) fast
2) quietly
3) well
4) safely
5) badly
6) loud
3.
1) we are sitting in the park.
2) David is studying Chinese.
3) I am working at the moment.
4) the dogs are eating in the kitchen.
5) Sarah is having breakfast.
5.
1) are you doing a test? yes, I do.
2) is your teacher sleeping? no, he isn't.
3) are your friends studying? yes, they are.
4) is it raining today? no, it isn't.
5) are your classmates sinning? yes, they are.
6) is your dad working? yes, he is.