Answer:
If I .....remembered..... (not forget) his number, I would have phoned him.
If I were you, I ....would have bought...... (buy) these shoes.
If you heat snow, it .will melt......... (melt) easily.
If it ....will be or is...... (be) warm tomorrow, we'll go to the beach.
If I ....lived.... (live) near the sea, I would sunbathe every day.
If you had gone with us, you ..would have had...... (have) lots of fun.
If he ..doesn't do....... (not do) his homework, he can not go to the party.
If she wrote a book, it would be a best-seller.
If I were you, I'd see a doctor.
If I had saved enough money, I would have bought that camera.
I ......will come.... (come) if I finish my work early.
If you heat water, it boils.
If I had known the answer, I would have raised my hand.
If we don't hurry, we'll miss our bus.
If he is busy now, I will come back tomorrow.
Explanation:
In all the sentences above the conjunction 'if'' is used. ''If'' here connects two clauses to form one sentence by presenting it as a conditional clause. The conjunction ''if'' is used to say or describe a particular event or thing can happen or take place when another event or thing happens. If is based on probability that if something happens then another thing will happen or take place.
So all the sentences are above are based on the probability that if one thing is done or an event takes place, then the other one will be done also. If not the other thing or event will not take place.