1. It's too hot outside. Why ______ at home?

A. not stay 　　　B. stay　　 　

C. not remain　　D. not to stay

2. － Have a nice weekend.

－ Thank you .__________

A. See you later. 　B. What about you?

C. The same to you. D. Thank you all the same.

3. － Oh, it's you! I ________ you.

－ I've just had my hair cut, and I'm wearing new glasses.

A. didn't recognize 　B. hadn't recognized

C. haven't recognized D. don't recognize