Bộ 3 Đề kiểm tra Unit 9 - Tiếng anh 10 iLearn Smart World có đáp án (Đề 1)

Remember to leave the building quickly when you hear ______________.

19/45

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

Remember to leave the building quickly when you hear ______________.

elevator call

the fire alarm

fire alarming

boat trips

Giải thích

Chọn B