Which sentences have mistakes? part 4

These are the sentences which have mistakes. Here's what's wrong:

I must to study hard: 'must' is not followed by 'to'. We should use 'I must study' or 'I have to study'.

I have saw it: 'have' should be followed by the past participle.'I have seen it'.

You can lend my car: Here we should use 'borrow' instead of 'lend'. 'Borrow' is used for taking and 'lend' is used for giving.

She play tennis every Friday: 'She' is singular so it must be followed 'plays tennis'.

Would you mind stand up?: 'Would you mind' should be followed by -ing. So it should be 'would you mind standing up?'

Your the tallest person I have ever met: 'Your' is used before nouns. The correct sentence is 'you are the tallest' or 'you're are the tallest person'.