Experts please answer this as soon as possible

1. cakes are loved by children.
2. let the windows be open.
3. 
4. the ball was picked up and kicked by Arushi.
5.
6.
7. Divya was elected as the class monitor by us.
8. a gift was given to me by Santa Claus.
9. ice creams are loved by everyone in summer.
10. 
11. this was known by them.
12. 
13. one's promise should be kept by themselves.
14. by whom is this done?
15. Iwas taught maths by your uncle.
16. the house is being built by the masons.
17. is cricket played by the boys in the afternoon?
18. we are being watched closely by them.
19. 
20. the flowers in my garden are tended by the gardener.

Ilefft place for those questions for which I could not answer...
hope the rest of the answers helps you...
 

1. Cakes are loved by children.
3.Special biscuits
are made by Krish for everyone.
5.Pet dog is loved by my mother.
9. Ice creams are loved by every one in summer.
8.I was given a gift by Santa Claus .
18.We are being watched by them closely.