.

Part a
1
🅰️The cruel haunter killed the gazelle

🅿️The gazelle was killed 
2
🅰️My mother gave sina a book for his birthday

🅿️A book was given to sina for his birthday 
3
🅰️Baird invented the first television in 1924

🅿️The television was invented in 1924
4
🅰️I always keep the butter in the fridge

🅿️The butter is always kept in the fridge
5
🅰️You did not inform us about the results 

🅿️We were not informed about the results

 Part b

.was found 
.were opend
.are kept
.is spoken
.was stolen

part c

.It's a lovely day,isn’t it
.you haven't done your homework, have you
.There is a problem here,isn’t there
.Hamid never says a word,does he
.Kate forget to feed the chickens,didn’t she