original sentence in each of the following questions.
46. People think that an apple a day is good for you.
A. It is thought that an apple a day is good for you.
B. It was thought that an apple a day is good for you.
C. They are thought that an apple a day is good for you.
D. They thought that an apple a day is good for you.
47. Ian didn't know how to water-ski, but he tried to do it.
A. Although Ian tried hard, he didn't know how to water-ski.
B. Although Ian didn't know how to water-ski, he tried to do it.
C. Ian didn't water-ski because he didn't know how to.
D. Ian didn't try to water-ski because he didn't know how to do it.
48. "I'm leaving here for Hue tomorrow," she said.
A. She said that she is leaving leave there for Hue the day after.
B. She said that she was leaving leave there for Hue the day after.
C. She said that she would leaving leave there for Hue the day after.
D. She said that she is leaving here for Hue the day after.
49. We should send their complaints to the boss.
A. Complaints should sent to the boss.
B. Complaints should be sent to the boss,
C.Their complaints should be sent to the boss.
D. Their complaints to the boss should be sent.
50. Quang plays the piano very well. He lives next door.
A. Quang, whom lives next door plays the piano very well.
B. Quang, whose lives next door plays the piano very well.
C. Quang, that lives next door, plays the piano very well.
D. Quang, who lives next door, plays the piano very well.