Zero Conditional
1. He (clean) the house if it (be verb) dirty.
2. You (get) a head ache if you (cry). a lot.
3. If the phone (ring), (answer) politely.
4. If you (study)_ in the library, please (stay) quiet
5. If plants (not get) enough light, they (die).
Solution:-
- He cleans the house if it is dirty.
- You get a head ache if you cry a lot.
- If the phone rings, answer politely.
- If you study in the library, please stay quiet.
- If plants do not get enough light, they die.