Zero, First and Second conditionals

If I ____ (not study) hard, I ______ (not get) a good mark.

If I ___ (paint) the room, I ___ (do) it in black. But my parents won't let me.

If I ___ (have) a headache, I ___ (take) a painkiller.

If I ___ (forget) my English book next week, I ___ (work) with my classmate.

If we ___ (leave) now, we ___ (be) home in two hours.

If you ___ (like), I ___ (lend) you my book for a few days. It won't be a problem.

The radio is broken. If you ___ (turn) it on, it ___ (make) a strange noise.

Meg sleeps only 4 hours a day. If she ___ (sleep) longer, her health ___ (improve) fast.

If you ___ (freeze) water, it ___ (turn) to ice.

If she ___ (want) to talk to me, she ___ (ring) up. But she doesn't.