a)I like kangaroos better than wallabies(改同义句)
I ______ kangaroos _______ wallabies
b)She is young ,so she can't carry the heavy bag(改同义句)
She isn't _______ ________ to carry the heavy bag
c)Let's decide on how we are going to Tibet(改同义句)
Let's decide on ______ ________ go to Tibet
參考答案:1,prefer...to
2,old enough
3,how to