I want to be an astronaut to do ________research in space station in the future.
A. unexpected B. reusable C. scientific
—Those people know how paper can be________ wood.
—They're pretty smart!
A. made in B. made from C. made of
How ________Jack is！He hasn't fed the dog for two days.
A. cruel B. hard C. smart
I am Grace Cortese，and I am 10 years old.I believe I can make a difference in ______ the environment，because my science teacher，Mrs.Esby，tells us that there are many things we can do to help protect the environment ______ we are willing to change our habits.
Every year at my birthday party，I ______ charitable donations instead of gifts.When I was eight，I asked my friends to donate to the Natural Resources Defense Council to save the polar bears.I ______ almost $150.Last year，my friend，Mary，also did that.Imagine how much money we could raise to save the environment if everyone asked for charitable donations ______ their birthdays!
My whole ______ is doing things to help protect the earth，too.Our school makes a carpooling(拼车)program to reduce the number of cars on the road，and we have a “Walk to School” day once a year.______ science teacher，Mrs.Esby，has a “Teenie Greenies” club at lunch and she teaches a class on how to recycle after school.And we ______ do beach clean－up.
If you ______ to do something for the environment，look through the website Grades of Green.It is ______ of great ideas for us to reduce，reuse and recycle waste，and it also has a lot of really interesting facts.
1.A. using B. protecting C. cleaning
2.A. if B. until C. because
3.A. ask for B. look for C. pay for
4.A. sold B. borrowed C. raised
5.A. to B. for C. with
6.A. school B. home C. factory
7.A. Her B. His C. My
8.A. still B. yet C. also
9.A. want B. use C. enjoy
10.A. short B. full C. tired
No ________studies have shown that shark fins are good for health.
A. believable B. scientific C. harmful
We find ________ hard to do a job very well.
A. this B. that C. it
