1.It is impossible for him to come here in 20 minutes.
2.Is it convenient for you to come to my office right now?
3.It is generous of her to lend you her brand new car.
4.It is dangerous for them to play dodge ball on the street.
5.It is unusual for Mike to go out in the midnight.
6.It is careless of you to lose your ID card.内容来自 听力课堂网：http://www.tingclass.net/show-5855-219057-1.html