50 câu trắc nghiệm ôn thi vào 10 Tiếng Anh - Hoàn thành đoạn văn có đáp án

Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase...

46/50

(1) _______ there isn't enough information on the effects of smoke in the atmosphere, doctors have proved that air pollution (2) _______ lung diseases.

However

Although

Therefore

Because

Giải thích

B

Although: mặc dù