He broke      a piece of chocolate and gave it to me before he broke the rest  into pieces.

You can’t go out since you haven’t finished your homework；      ，it is a stormy night．

 Once he makes up his mind to do something, he will devote himself _________to it.

--- In what way will you use your portable computer?--- I’ll use it _____ for giving lectures at home and abroad. 

She ______ got a job and moved to Jinan with the help of her boyfriend.