帮我做It做形式主语的用法的练习题
问题描述：
帮我做It做形式主语的用法的练习题
1：it is unwise to (),we should do one thing at a time
2:it is impossible to (),it takes time
3:it is cruel to()
4:it was terribly unfair to()
答
1.do a couple of things at once./do two things at once.2.finish it in so little/such limited time/such short period of time.3.kill these wild animals.4.treat me like that.