Complete the sentence with the correct forms of "be" and "do" 

Complete the sentence with the correct forms of "be" and "do" 
1.excuse me,DO you speak english?
2.where's kate.I ......... know
3.whats funny?why .........you laughing
4.what .......your sister do? she's a dentist
5.it ........raining .i ......want to go out in the rain
6.where........you come from?canada
7.how much .......it cost to send a letter to canada?
8.steve is a good tennis player,but he .......play very often