Exercise
Directions: Read the following sentences, fill in the blanks with the words that are correct in structure and proper in meaning.
1. _______ you take a photo, you should always check the position of the sun.
2. You will succeed in the end _______ you give up halfway.
3. The famous scientist grew up _______ he was born and in 1930 he came to Shanghai.
4. I would appreciate it _______ you call back this afternoon for the doctor's appointment.
5. _______ amusing the story is, I have to put it away and focus my attention on study this week.
6. Don't leave the sharp knife _______ our little Jane can get it.
7. Tom looked upon the test as an obstacle _______ his classmates regarded it as a challenge.
8. _______ most of the earth's surface is covered by water, fresh water is very rare and precious.
9. _______ there is a snowstorm or some other bad weat her, the mail always comes on time.
10. _______ the weather is like tomorrow, our ship will set sail for Macao.
11. _______ this is only a small town, it's crowded with tourists who come here all year round.
12. _______ some people come here for a short break, others have decided to stay forever.
13. She found her calculator _______ she lost it.
14. _______ I have traveled, I have never seen anyone who's as capable as John.
15. He was about to tell me the secret _______ someone patted him on the shoulder.
16. The map is one of the best tools a man has _______ he goes to a new place.
17. A good storyteller must be able to hold his listeners' curiosity _______ he reaches the end of the story.
18. — Dad, I've finished my assignment.
— Good, and _______ you play or watch TV, you mustn't disturb me.
19. Jasmine was holidaying with her family in a wildlife park _______ she was bitten on the leg by a lion.
20. Parents should take seriously their children's requests for sunglasses _______ eye protection is necessary in sunny weather.
21. He transplanted the little tree to the garden _______ it was the best time for it.
22. A dozen ideas were considered _______ the chief architect decided on the design of the building.
23. My parents were quarrelling about me _______ I could not quite tell why.
24. Pop music is such an important part of society _______ it has even influenced our language.
25. Small sailboats can easily turn over in the water _______ they are not managed carefully.