Ⅰ. 用方框中所给的单词或短语填空
because,so that,so,since
1. The teacher spoke slowly and clearly ______ ______ the students could understand him.
2. (2024绥化改编) The flight was delayed(延期) because of the storm,______ ______ the passengers had to wait at the airport.
3. ______ ______ you couldn't answer the question,perhaps we'd better ask someone else.
4. (2024吉林改编) Bob watches the news every night ______ ______ he wonders what's going on around the world.

1. so that 2. so 3. Since 4. because

()5. (2024牡丹江) Plastic waste has been a serious problem,______ the United Nations (联合国) is making new rules to deal with it.
A. so
B. but
C. or

A

()6. (2024连云港) Our school life is more interesting now ______ we can enjoy ourselves in different clubs.
A. because
B. whether
C. unless
D. although

B

()7. —I think I am the shyest in my class. What should I do?
—Be more active in class ______ you can improve your ability to express yourself.
A. or
B. so that
C. unless
D. although

B

()8. ______ his right hand was hurt,______ he wrote slowly.
A. Because；so
B. Because；/
C. Although；but
D. Although；/

C

()9. ______ you can't help me,I will ask someone else for help.
A. Unless
B. So
C. Since
D. Though

C

Ⅲ. 将下列句子改为含有状语从句的复合句
10. Everyone is here now. Let's begin our discussion.
______ everyone is here now,let's begin our discussion.
11. Adam got up late and didn't catch the train. He arrived here a little late today.
Adam got up late and didn't catch the train,______ he arrived here a little late today.
12. I could not sleep last night. There was a lot of noise outside.
I could not sleep last night ______ there was a lot of noise outside.
13. We have to run faster. We can catch up with others.
We have to run faster ______ ______ we can catch up with others.
14. Mrs Smith's pet dog was lost. She looked sad.
Mrs Smith's pet dog was lost,______ she looked sad.

10. Since 11. so 12. because 13. so that 14. so