-_____you sing and dance at this late hour of the night?-Sorry, I will stop right now.
John's success has nothing to do with good luck. It is years of hard work has made him what he is today.
Listen! Do you hear someone for help?
It rained heavily in the south,_______ serious flooding in several provinces.
Mrs. White showed her students some old maps ______ from the library.
Mark ______ have hurried. After driving at top speed, he arrived half an hour early.