This apple is _____ than that one.  

—Would you mind staying in such a noisy room?— No, but my son needs a______ place to study in.

—Who is        boy in your class? —Tony.

— The number of pandas is getting________ because their living areas are becoming polluted. — So we must do something to protect them.

---Maths isn’t as ______  as Chinese.---I agree with you. I think Chinese is _______  than any other subject.