1200 câu Trắc nghiệm tổng hợp Tiếng anh 10 - iLearn Smart World - Phần 3: Word form (có đáp án)
Xem toàn bộ quiz

The ozone layer which protects life on Earth from ___________ UV rays is becoming thinner. (HARM)

300/300

Write the correct forms of the words in brackets.

The ozone layer which protects life on Earth from ___________ UV rays is becoming thinner.

(HARM)

0/3000 ký tự
Giải thích

harmful