No matter what happens, you should keep _____. Just look on the bright side of things. 

— Thank you very much.— You are welcome. I was ______ glad to help.

Their cheerful voices showed that they were having a          discussion.

 If the price of oil remains ________ for the rest of 2013, I will consider buying a new car.

I wish you’d do____talking and some more work. Thus things will become better.