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.

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