4. Ask him _____ come to our party tomorrow.
A. not B. not to C. doesn’t D. isn’t
5. It’s twelve now. Let’s have _____ lunch together.
A. a B. an C. the D. x
6. I am a League Member. I volunteer my time _____ others.
A. help B. to help C. helping D. helped
7. I don’t know _____ kind of work I can do.
A. how B. what C. who D. why