用所给词的适当形式填空。

1. He'll leave on February ______ (two). 　　

2. A man is ______ (slow) than a bike. 　　

3. Buses are slow, men (人) are ______ (slow). 　　

4. I want my mother ______ (buy) me a new bike. 　　

5. May I ______ (invite) my friends to my birthday party? 　　

6. She doesn't ______ (know) your name.

梁是一种典型的受拉构件。