So difficult __________ it to adapt to the academic requirements of a Western university that I determined to take a preparation course.
To keep healthy, Professor Johnson ______ cycling as a regular form of exercise after he retired.
Time should be made good use of ___ our lessons well.
Tommy is ____ only child in the family, so his parents make ____ fuss of him.
For breakfast he only drinks juice from fresh fruit ___ on his own farm.
--You look upset. What’s the matter?---I had my proposal ___________ again.