试题题干
WORD FORMATION
Complete the following sentence with the proper form of the word in the bracket.
(practical) Although it is
to expect yourself to change the entire way you live, it is not too much to ask you to quit smoking now.
参考答案
试题解析
此处缺少形容词。
is后缺形容词作表语。it is + adj.（形容词）+to do sth.：做某事是......的。又根据后半句可知，此处应该是消极意义的。所以变practical为其反义词impractical。
句意：虽然期待你改变生活方式是不现实的，但是现在要求你戒烟也并不是太过分。