We must believe in ourselves,_______, I think, is the most important in our life.

Julia,as well as other two boys, for having broken the rules in class

Mum, what are you cooking It ______ so sweet.

Once you ______ the habit of smoking, it is hard toquit.

We do hope that one day the Chinese language will become a __________ language, that is, everyone in the world will communicate in it.