Put the verbs in the brackets in the correct tense
1. If you __________ (expose) phosphorus to air, It __________ (burn)
2. If you __________ (heat) ice, it __________ (turn) to water.
3. If metal __________ (get) hot, it __________ (expand)
4. If you __________ (stand) in the rain, you __________ (get) wet
5. If anyone __________ (ring) the bell, don’t __________ (open) the door.
6. If my father __________ (not, sleep) well, he __________ (drink) coffee before going to bed
7. If you__________ (press) this button, the machine __________ (stop)
8. If you__________ (multiply) 6 to 8, you__________ (get) 48
9. If anyone __________ (call), say that I__________ (be, not) at home.
10. If you__________ (go) to the Post Office, you__________ (mail) this letter for me.