Đề thi Học kì 1 Tiếng Anh 12 Thí điểm (Đề 1)

If Tom ...... an alarm, the thieves wouldn’t have broken into his house

21/50

If Tom.......an alarm, the thieves wouldn’t have broken into his house.

installs

had installed

have installed

installed

Giải thích

Đáp án B