有几个英文题目,填介词或副词

问题描述:

有几个英文题目,填介词或副词
1.Old people like to look ( )while young people always look ( )
2.I can tell ( ) experience that sometihing is wrong with the machine.
3.Watching TV can keep you ( ) to date ( ) what is happenin in the world.

look back 回忆
look forward向前看
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