If he (to go) with me, I (to be) happy.
If Mary (to work) hard, she (to be) promoted.
Andrew (to buy) drinks, if i (to cook) dinner.
Mom (to present) a computer, if her children (to study) well.
Olga (to write) an essay, if Julia (to help) her.
My brother (to enter) the university, if he (to study) diligently.
Tom and Garbrielle (to ride) a bicycle, if the weather (to be) good.
If Porter (to stay) to London, he (to go) to National History Museum.
If i (to finish) school year with good marks, I (to go) to the seaside this summer.
If dad (to hear) that we don't sleep, we (to be) punished.