Tổng hợp đề thi thử tiếng anh thpt quốc gia (Đề số 36)

If my cousin _____________ an alarm, the thieves wouldn’t have broken into

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Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

If my cousin _____________ an alarm, the thieves wouldn’t have broken into his house.

installs

have installed

had installed

installed

Giải thích

Chọn C