31 Choose the right variant of plural noun: leaf
O A. leafves
O B. Leaves
O C. Leafs
O D. Leavves
O E. Leafes

My sister's husband is my.
O A. stepbrother
O B. brother-in-law
O C. father-in-law
O D. son-in-law
OE. relatives

This is my pen, and that is
O A. he
O B. my
O C. yours
OD. you
O E. our

Choose necessary possessive pronoun: Where is ... book?
O A. theirs
O B. yours
O C. ours
O D. mine
O E. my​