Combine each pair of sentences using "so as to/in order to".
1. She phoned me last night.
She wanted to know the result of the exam.
2. My mother went to the market.
She wanted to buy food.
3. The man is practicing singing English songs.
He will take part in a singing contest.
4. The children are working very hard.
They have to pass the final exam.
5. We are saving money.
We want to buy a car.