помогите пожалуйста!
напишите правильный вариант:

1 . you ...... ( must / have/ are able) do ..... ( what/ which ) your mother ..... ( tells/ says)
2. - how far .... ( is there / is it) to Sergiev Posad?
-....( it is / there is ) 70 kilometers.
3. Sorry, I ... (mustn't/ don't have to/ can't ) help you. You ... (will have / had) to ask a policeman about it.
4. she felt ill yesterday. She .... ( must / has to / had to) leave early.
5..... ( it was/ there was ) a museum in that town. .... ( it was/ there was) a very Interesting museum.
6. you.... ( mustn't / don't have to) drive fast. .... ( it is/ there is ) a school near here.