Read the following passage and mar...

Câu hỏi: Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 38 to 42.

 

B. Paint companies must limit the amount of lead used in their paint.

C. Paint companies aren't requừed to limit the amount of lead used in their paint.

D. Paint companies have always followed restrictions regarding the amount of lead used in their paint.