If only I _______ more confidence in the English speech contest held last week!
A． would have B． had C． had had D． have
According to the school rules, no child _______ be allowed out of the school during the day, unless accompanied by an adult．
A． will B． would C． might D． shall
It was not until 1911, _______ the first vitamin was identified, _______ people realized the importance of it．
A． when; which B． when; that C． that; which D． that; that
The moment I completed the 800-meter race in the school sports meet, my legs _______．
A． gave out B． gave away C． gave in D． gave up
We’ve just heard a warning on the radio _______ a typhoon may be on its way．
A． what B． when C． which D． that
Traditional Chinese medicine is thousands of years old and has developed _______ time．
A． over B． in C． on D． of
