21. To power their inventions, people have made use of natural energy sources, _______ coal, oil, water, and steam.
A. in addition to B. as C. and they use D. such as
22. ________ excellent art museums, Moscow has a world-famous baler company.
A. Because of B. In spite of C. In case of D. In addition to
23. Alex cannot express himself clearly and correctly in writing. He will never advance in his job ________ he improves his language skills.
A. otherwise B. if C. only if D. unless
24. ________ there was no electricity, I was able to read because I had a candle.
A. Unless B. Even though C. Even D. Only if
25. A fire must have a readily available supply of oxygen. ________ it will stop burning.
A. Consequently B. Furthermore C. Otherwise D. However
26. I studied Spanish for four years in high school. ________, I had trouble talking with people when I was traveling in Spain.
A. Therefore B. On the other hand
C. Moreover D. Nevertheless
27. I am afraid that the company is in deep trouble. ________, we are going to make some people redundant.
A. Therefore B. However C. But D. And
28. I like to keep the windows open at night no matter how cold it gets. My wife, ______, prefers a warm bedroom with all windows tightly shut.
A. nevertheless B. consequently C. on the other hand D. moreover
29. Some fish can survive only in salt water, ________ other species can live only in fresh water.
A. whereas B. unless C. if D. since
30. ________ Jason because famous, he has ignored his old friends. He shouldn’t do that.
A. If B. Ever since C. Even though D. Due to
21. To power their inventions, people have made use of natural energy sources, _______ coal, oil, water, and steam.
A. in addition to B. as C. and they use D. such as
22. ________ excellent art museums, Moscow has a world-famous baler company.
A. Because of B. In spite of C. In case of D. In addition to
23. Alex cannot express himself clearly and correctly in writing. He will never advance in his job ________ he improves his language skills.
A. otherwise B. if C. only if D. unless
24. ________ there was no electricity, I was able to read because I had a candle.
A. Unless B. Even though C. Even D. Only if
25. A fire must have a readily available supply of oxygen. ________ it will stop burning.
A. Consequently B. Furthermore C. Otherwise D. However
26. I studied Spanish for four years in high school. ________, I had trouble talking with people when I was traveling in Spain.
A. Therefore B. On the other hand
C. Moreover D. Nevertheless
27. I am afraid that the company is in deep trouble. ________, we are going to make some people redundant.
A. Therefore B. However C. But D. And
28. I like to keep the windows open at night no matter how cold it gets. My wife, ______, prefers a warm bedroom with all windows tightly shut.
A. nevertheless B. consequently C. on the other hand D. moreover
29. Some fish can survive only in salt water, ________ other species can live only in fresh water.
A. whereas B. unless C. if D. since
30. ________ Jason because famous, he has ignored his old friends. He shouldn’t do that.
A. If B. Ever since C. Even though D. Due to
