Complete the second sentence so that it means the same as the sentence before

Complete the second sentence so that it means the same as the sentence before .
1. We began eating when it started to rain 
We have ...................................................
2. Let 's have a picnic in the park on the weekend . 
Why .......................................................................
3. No one in the class plays better than him . 
He can .........................................................
4. Does your class have forty students
Are .......................................................