二.按要求完成句子
1.A giraffe is taller than (an) elephant
2.A cat isn't (bigger) than a panda
3.Which animal is smaller,a dog (or)a bear
4.Is (a)liger smaller than a bird?
5.My legs are longer than a (bird’s)
6.John is (heavier )than Mike.(改错)
7.Mr Black is 168cm tall.(改为特殊疑问句)
_How _tall_____is Mr Black?
8.A dog is lighter than a tiger.(改为一般疑问句)
____Is_a dog lighter ___than__a tige