$\textrm{1. The bill must be paid at once}$

$\textrm{2. The house which was painted blue and white is beautiful}$

$\textrm{3. Would you mind if I used your phone?}$

Complete the second setence so that it  has a slimilar meaning to the first. 
1. You must pay the bill at once
---> the bill....must be paid at once............................
2.The house is beautiful. The house was painted blue and white.
---> The house.... which was painted blue and white is beautiful..................
3. Is it all right if I use your phone?
---> Would you...mind if I use your phone?............