1、As for what (do) next, we have no idea.
2、If you have nothing common, how can you get on so well?
3、就像你想象的那样，那里的生活非常艰苦。
, life there is very hard.
4、虽然有他的帮助，我的实验还是没有成功。
his help, I still failed in the experiment.
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