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Mark the letter A, B, C or D on your answer sheet to show the underlined part that needs correction in each of the following questions.
Câu 1: The price of crude oil used to be a great deal lower than now, wasn't it?
Câu 2: We had planned to go to the movies but because of the amount of work I had I spent the evening to study .
Câu 3: An able flier, a crow, may travel thirty or forty miles the day before it returns home.
Câu 4: Because of differences between the crops grown and a greater abundance of rivers, farmers in the South need little rain than their counterparts in the North.
Câu 5: Mrs. Anderson bought last week a new sports car; however, she has yet to learn how to operate the manual gearshift.