1,They haven't been to XiZhang,they sai last time .
2,He hasn't written to me since he left HuaiNan.大神，6句呢3,-- I hope it will stop rainning tommrow noon
-- What ? It has stopped rainning for one hour .
4, Tom has collected more than 1000 stamps since the end of last year .
5, The boy knows he must be braver and firmer than before after has gone through this thing .
6,Don't worry , I would have forgotten it before we come back home.