THE LIGHTS IN SUSAN'S ROOM ARE STILL ON. SHE __________ HER ASSIG...
31. The lights in Susan's room are still on. She __________ her assignment. A. might be writing B. must have written C. should have written D. might have written Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
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