Zero and first conditionals

If you turn the key, the door ................... . (OPEN)

If it .......................... (be) sunny, we ..................... (have) a picnic at the park.

If Mary ..................... tired, she always ...................... to her favourite music. FEEL/WATCH

What will your brother do if he .........................(not pass) the exam?

If I have enough money, I ............................ (buy) some new shoes.

His parents get worried if Peter ........................... them. (CALL negative)

Snakes bite if they ......................... (be) scared.