46. Scientists wonder if chocolate is addictive, for many people can’t seem to live without it.

A. Scientists wonder if chocolate is addictive; however, many people can't seem to live without it.

B. For many people who can’t seem to live without chocolate, scientists wonder if it is addictive.

C. Because many people can't seem to live without chocolate, scientists wonder if it is addictive.

D. Although many people can't seem to live without chocolate, scientists wonder if it is addictive.

47. Thu had a bad experience shopping at that store. She decided never to shop there again.

A. Thu had a bad experience shopping at that store; consequently, she decided never to shop there again.

B. Thu had a bad experience shopping at that store. As a consequent, she decided never to shop there again.

C. Thu decided not to shop at that store again meanwhile she had a bad experience there.

D. When Thu decided not to shop at that store again, she had a bad experience there.

48. You had better buy these shoes while they’re on sale. You']l have to pay full price next week.

A. Despite the fact that you buy these shoes while they're on sale, the price will be full next week.

B. If you don’t buy these shoes while they're on sale, you'll have to pay full price next week.

C. In spite of the full price next week, you had better buy these shoes while they're on sale.

D. You had better buy these shoes while they're on sale otherwise, you'll have to pay full price next week.

49. The party became quite boring after Toby left. Everyone went home soon afterwards.

A. The party became quite boring after Toby left because everyone went home soon afterwards.

B. Everyone went home soon so the party became quite boring after Toby left.

C. The party became quite boring after Toby left; therefore, everyone went home soon afterwards.

D. Although the party became kind of boring after Toby left, everyone didn’t go home soon.

50. I was not confident of winning. Nevertheless, I decided to give it a try.

A. I was not confident of winning, nonetheless, I decided to give it a try.

B. I was not confident of winning, however, I decided to give it a try.

C. I decided to give it a try even though I was not confident of winning.

D. Though I decided to give it a try I was not confident of winning.