完成句子。根据所给提示，完成句子。每空一词，含缩略词。
1. Tony used to be short. (改为否定句)
Tony _____ _____to be short.
2. They will take my position in three days’ time .(对划线部分提问）
_____ _____will they take your position?
3.We can’t decide when we should go to Yunnan.（改为同义句）
We cant decide ______ ______ go to Yunnan.
4. 老师总是鼓励我们多参加各种活动。（完成译句）
The teacher always _______ us to join all ______of activities often.