=>
1. He went to the airport so that he could meet his father.
2. She wore warm clothes so that she wouldn't get cold.
3. Please arrive early so that we can start work on time.
4. I took off the shoes so that I wouldn't make any noise.
5. We must keep our gloves on so that we can't get frost bitten.
6. The workmen left red lights near the hole so that they could warm motorists.
7. She locked the door so that she couldn't be disturbed.