Nice to meet you, my name are John.
incorrect
This is my cousin, and he is at school.
correct
His wife is Chinese, but his neighbour is American.
correct
My father and mother is on holiday.
incorrect
Nice to meet you, my name are Peter.
incorrect
Her parents at home now.
incorrect
Nice to meet you, my name is Kate.
correct
This is my cousin and she hungry.
incorrect
Grandmother and grandfather is in the park.
incorrect
The grandson plays in the park near his grandfather.
correct
We are hungry at home, let’s eat!
correct
Grandmother and grandfather is near our school.
incorrect
He hungry and his wife hungry too.
incorrect
Her grandmother is in the garden.
correct
My sister likes salad and soup.
correct
His wife Spanish, but his neighbour American.
incorrect
My father and mother is in the garden.
incorrect
My parents are on holiday in Spain.
correct
His wife is from Ukraine.
correct
This is my neighbour, her name are Maria.
incorrect