=>
20. It took him two hours to write the essay.
21. Never before have we talked to an interesting person like you.
22. John opened the store in 1932.
23. It was not until her father came home that she did her homework.
24. Although the weather was cold, we all went for a walk.
25. If it hadn't rained last night, I would have gone to the barbecue.
26. We work as hard as he does.
