Conditional sentences type 0

If you ____ (not, answer) all of my questions, I can't do anything to help you

If someone ____ (come) into the store, smile and say "May I help you?"

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

If you meet John, _______ (tell) him I want to see him

If you need help, ____ (call) me!

If you try to mix red and yellow, you (get) orange.

If you go by air, it ____ (take) you around two hours to get to Ho Chi Minh City from Ha Noi