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Some of these sentences are right and some are wrong. Correct the sentences that are wrong. Write 'okay' if the sentence is right.

She's a very nice person. okay

I need a new jeans. I need a new pair of jeans / I need some new jeans

I've got two brother and four sister……………………………………………...

It's a lovely park with a lot of beautiful tree……………………………………..

There are a lot of sheep in that field………………………………………………

Do you make many mistake when you speak English?.............................................

She's married and she has three childs……………………………………………….

Most of my friend are students……………………………………………………….

He put on his pyjama and went to bed……………………………………………….