I、 Choose the best answer. (共26分)
1. It’s raining heavily. You’d better ___________ out.
A. go B. to go C. not go D. not to go
2. She _________ any help. She can do it by herself.
A. needs not B. needn’t C. doesn’t need D. doesn’t need to
3. ________ important information they’ve collected !
A. How B. How an C. What D. What an