1. The defendant refused to answer the prosecutor's questions Because he was afraid that his answers would incriminate him (C)
2. Mrs. Walker has returned The wallet to its original owner (D)
3. The Hospital owes (A) The goverment twenty million dollars for the construction of the new wing.
4.Sarah (C) Told her professors that she could not attend classes next week.
5.The artist was asked to show some paintings at the contest because The judges had been told of his talents(D)
6. If motorists do not observe the traffic regulations, they will be stopped, ticketed, and have to pay a fine. [(D) have to pay a fine, because it's not parallel]
7. Fred, who usually conducts the choir rehearsals, did not show up last night because he had an accident on his way to the practice. [(D) on his way to the practice, hmm I actually not sure about this answer but it sounds like a redundancy]
8.Ashort time before her operation last month, Mrs. Carlyle dreams of her daughter who lives overseas. [(C) dreams, because it's a present progressive otherwise the main clause is past tense]
9. The atmosphere in Andalucia is open, warm, and gives a welcome feeling to all who have the good fortune to visit there. [(B) gives a welcome feeling, because it's not parallel]
10. Some of the people were standing in the street watched the parade, while others were singing songs. [(C) watched, because it's not parallel as well]
P.S.
Orange = A
Yellow = B
Green = C
Aqua = D
