As a Chinese saying goes, a mountain ______ be too high or an ocean too deep. Therefore, there is no end to our self-improvement.
Although he talked half an hour, he couldn't give us a good ________ of the reason why he did it.
The horrible noise from the man's room simply _____ me mad.
Professor White has written some short stories, but he is ______known for his plays.(NMET 1998)
You are _____ careful than your brother. You two can’t do the work that needs care and skill.
How cold it is! We’ve never had ______ this winter.