He tried his best to solve the problem,_____difficult it was. A however B. no matter C. whatever D. although
You can depend on___on Sunday. Which is wrong?
_____we are closely united, we can surely overcome these difficulties.
The final examination is coming up soon. It’s time for us to___our studies.
The problem___deciding how to get some financial support.
The information was only given to a ____group of reporters.