Viết lại câu sử dụng cấu trúc ''if''

Viết lại những câu này sử dụng cấu trúc ''if''
1 he smokes so much, perhaps that's why he can't get rid of his cough
->..................................................................................
2I haven't the right change so we can't get tickets from the machine.
->.................................................................................
3 They speak French toherr, notnglish, so hẻ English doesnn't improve
->..........................................................................
4 He doesn't work overtime, so he doesn't earn as much as I do
->.................................................................................
5 My rumber ín't in the directory so peopledon't ring me up
->...............................................................................
6 He is very thin perhaps that's why he feels very cold
->..............................................................................
7 I'm fat; that's why I can't get through the bathroom's window
->..............................................................................