Ngữ Pháp và Từ Vựng 22.Bricks baked in a kiln are _______ are dried i...

Ngữ Pháp và Từ Vựng

22.Bricks baked in a kiln are _______ are dried in the sun.
A. the hardest of those that B. much harder than those that
C. not as nearly hard as those D. far harder than those