Mike is ______, but his brother Sam is much ______. A: heavy; heavie B: heavy; heaviest C: heavier; heaviest D: heavier; the heaviest

The place ____ the bridge is supposed to be built should be _____ the cross-river traffic is the heaviest.

This box is ______ than that one. A: heavier B: heavy C: heaviest

Of all the boxes, the red one is . A: heavy B: heavier C: the heaviest

Last year, his area experienced _____ heaviest rainfall in _____ month of May. A: /; a B: a ; the C: the ; the D: the ; a

An elephant is ____ than a tiger.(3.3) A: heavy B: very heavy C: the heaviest D: heavier

An elephant is ____ than a tiger.(3.3)(3.3) A: heavy B: very heavy C: the heaviest D: heavier

The place _______ the bridge is supposed to be built should be _______ the cross-river traffic is the heaviest. A: which; where B: at which; which C: at which; where D: which; in which

Which is, Li Lei’s box or Han Mei’s box? A: heavy B: heavier C: more heavier D: the heaviest

Which is Li Lei's box or Han Meimei's box? A: heavy B: heavier C: more heavier D: the heaviest