Zero Conditional: If you __ (heat) ice, it __ (melt).

Zero condition: If the sun ____(not/shine), plants _____(not/grow).

First Conditional: If she ___ harder, she will pass the exam. (study)

First Conditional: If they leaves now, they will catch the last train. (leave)

Second Conditional: If she ___ more confident, she would perform better on stage. (be)

Second Conditional: If they ___ the lottery, they would buy a new house. (win)

Third Conditional: If I ___ about the meeting, I would have joined. (know)