HÃY CHỌN MỘT CÂU TRẢ LỜI ĐÚNG NHẤT
94.
That carcinogenic substances ________ in many common household items is well known.
A. are containing
B. contained
C. containing
D. are contained
94.
That carcinogenic substances ________ in many common household items is well known.
A. are containing
B. contained
C. containing
D. are contained