Choose the right word combinations to complete the sentences.

Choose the correct option.

I [have known|has known|have know|has know] her for two years.

Where [you have travelled|you has travelled|have you travelled|has you travelled] to?

My best friend [have written|has written|written|has wrote] three books so far.

My brother [has not been|not has been|has been not|has been't] at school today.