用few, fewer, little, less或more填空, 每词限用一次

【1】Mr. Jackson is very serious, so _________people want to make friends with him.

【2】Tom isn't happy because he has _________ time for reading.

【3】Jack has _________pens than his sister.

【4】With _________pollution, our planet will become greener and our health will be better.

【5】Most of students think they should have _________time to take up their hobbies.