选适当词组,用其正确形式完成句子.

选适当词组,用其正确形式完成句子.
词组：laugh at / later on / make miatakes/ be afraid to / begin with
1.many students ______take with forenigners.be brave.
2.we should't ______the paople who are in troulbe.we should help them.
3.everyone __in his life .so the most important is how to correct them.
4.we all know that knowledge__________practice.
5.i'm busy now .but i'll help you do it______ .