The engineers made two big plans for the dam, ____ was never put in force.
. When ___ help, one says “Thank you” while when _________ help, one asks “Can I help you?”
. The key point is not who said the words, _________ they are true or not.
. As I know, it is five years since Mary _________ in the south.
. Jim is _________ person, and everyone is willing to be with him.
. ._________ the teacher couldn’t understand was _________ fewer and fewer students showed interest in her lessons.