—Some Chinese students find it hard to get used to the life in London.  —Exactly, ______ they’ve learnt a lot about the city before.

The problem with being a time waster is _____the online game playing often spills over into the periods of time that should be productive.

We must get up early tomorrow，______ we’ll miss the first bus to the Great Wall．

I’d like to work with _______ is honest and easy to get on with. 

It is the fact ______he doesn’t know his own birthday ______surprises us all.