18.??Because of_____high demand for Type O blood,_____supplies of it are usually limited, A. the, the. B. /, /. C. /, the. D. a, the. ...

13.??— Sorry, I_____to bring the book you need for you. — Never mind_____it myself after school. A. forget, I’d rather buy. B. forgot, I’ll buy. C. forgot, I’m going to buy. D. forget, I’d better buy. ...

8.??For this question, you are only required to state the_____ facts. A. empty B. bare C. vacant D. deserted ...

3.??They kept trying_____they must have known it was hopeless. A. if. B. because. C. when. D. where. ...

20. —Alice, why didn’t you come yesterday? —I _____, but I had an unexpected visitor. A. had B. would C. was going to D. did ...

15. It is the ability to do the job_____matters not where you come from or what you are. A. A. one. B. that. C. what. D. it. ...

7. This heavy traffic is_____for this time of the day. A. actual. B. natural . C. Formal. D. normal. ...

19. For this question, you are only required to state the_____ facts. A. empty B. bare C. vacant D. deserted ...

9. It is said that he likes to carry a raincoat _______. A. where he goes B. wherever he goes C. where he goes to D. wherever he goes to ...

2. The boy began to tell us all the wonders he had seen in his travels _________ great detail. A. with B. by C. in D. of ...