I can't tell you the answer because I don't know. (WOULD)                If I ____________________________ tell you.

Sandra only goes to dance classes because she wants to keep fit. (ATTEND)          If Sandra didn't want to keep fit, ___________________________ dance classes.

Cycling to school will make you more independent. (BECOME)                If you cycle ___________________________ more independent.

He won't pass the test because he doesn't work hard enough. (HARDER)             If he worked ____________________________ pass the test.

He's not very enthusiastic because he's tired. (SO)       If ___________________________, I'd be more enthusiastic.

I'll lend you my book if you take care of it. (AFTER)          If you _________________________, you can borrow it.