单词拼写：They mustn't get on () in the office when they are at work13.They mustn’t get on li_________ in the office when they are at work.14.Surfing on the Internet is very in_________.15.The song re_________ her of her school days ten years

单词拼写：They mustn't get on () in the office when they are at work13.They mustn’t get on li_________ in the office when they are at work.14.Surfing on the Internet is very in_________.15.The song re_________ her of her school days ten years They must be waiting for us,()?a.aren't they b.mustn't they 求辨析 We mustn‘t throw( )awayA.its B.them C.they They must be there now,aren't they?这里为什么不是mustn't they而是aren't they? 单词拼写They go to home t____ a year. 单词拼写.---____youself,Tom.---Thank you .They all taste delicious. They must have finished the work,---?A,mustn't they B,haven't they C,hadn't they D,didn't they They must have been here the day before yesterday,__________?A.mustn't they B.didn't they C.mustn't have they D.had they 为什么有yesterday 就要用didn't they?A.为什么不可以呢? 单词拼写 单词拼写, 拼写单词 单词拼写, 单词拼写 单词拼写! 单词拼写, 单词拼写' 单词拼写., 单词拼写