The problem ________ this material can be used in our factory has been solved.
Everyone knows Americans as “Yanks” which _____ Yankees used during the Civil War for the northern states of the US.
Trees need water to grow; _____, friendship needs our heart and passion to develop.
I would appreciate _____ it a secret.
His plan was such a good one _____ we all agreed to accept it.
Most people admit _____ the fact that it is not easy _____ into a famous university.