The Chinese government has overcome problems of population and economy to ________ its “nine years of compulsory education”.
—Why haven’t you asked her to come here?— She _____ an important experiment when I found her and she _____ it.
It was when we were returning home _____ I realized what a good feeling it was to have helped someone in trouble.
As John Lennon once said, life is_____ happens to you while you are busy making other plans.
The cloth _______smooth and soft _______.
Don't doubt the possibility we declared yesterday ____ we will surely win the game in spite of all the difficulties.