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Câu hỏi: Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
The fire ____________to have started in the furnace under the house.
A. is believed
B. that is believed
C. they believe
D. that believe
The fire ____________to have started in the furnace under the house.
A. is believed
B. that is believed
C. they believe
D. that believe
Phương án A cung cấp động từ chính cho câu
Đáp án A.