Shirley, a real book lover, often brings home many books to read _____ the library.
7.---Mary, you didn’t show up at the meeting last week? ---No, I________, but my son had a sudden fever and I had to stay at home to take care of him.
6.Newly-developed materials for spaceships can___________extreme weather conditions.
5.A good teacher is ________who is always doing things for the good of the students.
4.The first time I met David in the Central Park, both of us felt that we________each other for ages.
3.---How much do I owe you for this beautiful vase? ---____.It’s a gift.