Each sentence has a mismistake, find and correct it

Each sentence has a mismistake, find and correct it : 

1. She hasn't met  him while  he was  a little boy. 

2. You know  where  Lan is  , do  you ?

3. Mrs Thuong told  us that she would  come and see  us tomorrow  .

4. What  is the name of  the woman which  you are talking about  ?

5. Our English teacher suggested that we would  do more grammar exercise.