No sooner _______ the competition _______ _______ an unexpected accident happened.

33．It was not until one night_____we were doing our cleaning-upI got curious and wanted to see what was on the top floor

Seventy-two percent of Chinese males____ not want to marry a female ___ is “more capable” than they are.

Many people do not realize the importance of health _____ they have fallen ill.

The weather ___ hot, we all went to the seashore.