unit1
　　unhappy problem bad square test advice famous real joy diving
　　climbing speaking camping laugh thought solve smiling not to be to give,
　　to become,
　　healthy healthily, bored, more, singer, more dangerous, pleasant, the most nervous, interesting, the worst, slimmer,
　　BCDDA DCBDB CBADB
　　BDCBD ACBDA
unit2
　　一 heroes, tasty, subject, seniors, admired, article, geography science unimportant, practicing, languages, history,
　　二 visitors, useless, fewer less, twice, mixed, myself, driving, unpopular, pleasant, boring,
　　三DCAAB ACDAD BBAAD BACDB BBCAA
　　四 help, doesn’t rain, asking, chatting, is going to be doing, opening, put ran, to be, washing, will arrive, arrives will have talking