It was three months later _____ he completed the job with difficulty.
. It is none of your business ___ other people think about you. Believe yourself.
. I like getting up very early in summer. The morning air is so good ___ .
. ___ is known to us all is that the 2010 World Expo will take place in Shanghai.
. We decided to turn to ___ can help us out.
. --- What do you think made Mary so upset? --- __ her new bicycle.