If she hadn’t had a swollen knee, she...(play) volleyball

if her knee wasn't swollen, she would have played volleyball

Объяснение:

-our organise wants to   protect the environment.

-we fight against water and air    pollute

-are you unhappy with the ecological situate  in your region?  

-send us some inform about it and we`ll try to help. 

1. usually boys place chairs to a lesson of english language. 2. at you the interesting cultural program. 3. we can invite group of pupils (students) of 11 persons to a lesson of drama art. 4. you will remain after mathematics? 5. boys from our school have agreed will meet at 2 o'clock in the afternoon.