"Who Moved My Cheese?", ____________ is a best-selling book, is written by Spencer Johnson.
The husband and wife did agree ______ each other _______ it.
She may have been caught in the heavy traffic, ____ she won’t arrive here by five o’clock.
He didn’t do well _____ Chinese. He had some trouble ______ it.
Can you ______ the difference ______ the two phrases?
The _____ you study, the _____ you’ll be in it.