I’ll let you know_____ I receive Brain’s e-mail message.

Would you take my old TV in _______ for this camera?

I have to reschedule the appointment with you since there is a ______ in my arrangement. 

People say, “Guilin’s scenery is superb in the world.” It was not until I visited the place that I found it really worthy of the _______.  

The coach’s great _____ is to make all the players into a united team and win the final success.