【正文】
ge 86. It + is + for sb. to do sth. to do sth. of sb. to do sth. A guessing game It + is + for sb. to do sth. to do sth. of sb. to do sth. sad, necessary, important, wrong, lucky, hard, difficult, easy, … 1539。 is easy to work out the maths problem. is polite to give the seat to the elderly on the bus. is impossible to move such a big box. is meaningful to donate money to charities. is right not to talk with classmates. is important not to drive after drinking. It?s necessary to receive training. It?s necessary to provide support. It?s useful to work closely with the special athletes. What is necessary for volunteers to do duri