用方框中所给短语的适当形式填空

at the beginning of；write down； be able to；take up；get good grades

【1】I am going to study hard at school because I want to _____.

【2】Mike is old enough.I think he _____ look after himself.

【3】Let's _____ the words.I think they are very important.

【4】If you are going to _____ a hobby，you should really like it.

【5】The teacher asks us to make resolutions _____ the school year.