完成句子（每空1分，共8分）
根据所给提示，完成句子，每空一词，含缩略词。
Tony did his homework just now. (改为否定句)
Tony ___________ _____________ his homework just now.
The workers grew many flowers in Chongqing Expo Garden. (改为被动句)
Many flowers _________ ____________ in Chongqing Expo Garden.
The exchange student often teaches himself Chinese. (改为同义句)
The exchange student often __________ Chinese _________ himself.
我已经有一个月没有收到她的来信了。(完成译句)
I haven’t _________ ___________ her for one month.