People use steel to build houses instead of wood, because wood is broken ________.
A.easier B.much easier C.more easily D.most easily
You are speaking too fast. Can you speak a little ________?
A.slowly B.more slowly C.the more slowly D.the most slowly
Jack eats a lot and never exercises, so he becomes the in his class.
A. thinner B. heavier C. thinnest D. heaviest
Qomolangma is ______ than any other mountain. I hope to climb it one day.
A. high B. higher C. highest D. the highest
Tommy can speak Chinese as ________ as his English.
A.well B.good C.better D.best
Grace does her homework ________ in our class.
A.careful B.the most careful C.carefully D.the most carefully