Question

+
Singular
Plural
1. knife
3. ... OC
3.
socks
06
5.
tomatoes
7. takeoff
9. passer-by
+​

Answer 1

Answer:

Most of your questions are written incorrectly but still i will try to answer them,

Explanation:

1. knife = knives

3. socks = sock

5. tomatoes = tomato

7. takeoff = takeoffs

9. passer-by = passer-bys

hope it helps...

Answer 2

I have no answer

Sorry ........