简介： 从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。 1. It’s generous ______ them to donate money to UNICEF. They think it’s important ______ them to help poor children go to school. A. to, for B. for, of C. of, to D. of, for 2. She has spent _____on her study, but the result of her study isn’t______. A....