how do you do?
how are you?
how is he today?
how old are you?
how old is she?
how often do you go to swim?
how often do you clean your room?
how many dogs are there?
how much is it?
how much money do you have?
how many people are there?
how many people are there in your family?
how is that?
how is your study?
how come?
how does she study?
how do you do it
how do you know it?
how beautiful she is
how great it is