I didn’t know it could do terrible ______to your heart and lungs or ______was more difficult for smoking couples to become pregnant.
27. That’s the woman one of __________ daughters works as an engineer in the US.
26.The house I grew up______has been taken down and replaced by an office building.
25. For many cities in the world, there is no room to spread out further, _____New York is an example.
24. Children should be taught to share, ____________ the parents must attach a lot of importance.
23. After working until midnight for two weeks, he finally_________and had to stay in the hospital.