Complete using TYPE I CONDITIONAL:
1. If he (need) .............. a book, he (buy)..................one.
2. If we (feel) ..................like it, we (play) ................football.
3. If you (tell)..................me the truth, I (be able to) .............help you.
4. If it (snow)................................, he (go) ....................skiing.
5. If they (buy) .......................a horse, they (learn)............how to ride it.