1st Conditional Real

We are talking about the future. We are thinking about a particular condition or situation in the future, and the result of this condition. (True or Real)
This is the context: It is morning. You are at home. You plan to play tennis this afternoon. But there are some clouds in the sky. Imagine that it rains. What will you do?
If it rains this morning, I will stay home
If it rains, I will not play tennis
IF YOU CUT A PLANT, IT WILL PRODUCE NEW ROOTS OR STEMS.
IF YOUR FATHER MOWSTHE LAWN, iT WILL GROW  AGAIN.

IF YOU STOP WATERING,THE GRASS WILL GROW LESS 

You mean  to mow the lawn instead of saying to cut , however, in relation to plants, you can speak about “Plant cutting”, also known as striking or cloning.

The cutting produces new stems or roots or both, and thus becomes a new plant independent of the parent.
Now, try to give answers:
1 You will be happy if you ___________________ for your exams. (to study)
2 We ___________________ if the weather’s good. (to go)
3 They ___________________ you if you don’t wear a wig and dark glasses. (to recognize)
4 If the bus ___________________ on time, we won’t miss the football game. (to be)