The decision _____ giving lessons during vacations and weekends should be banned is ____ the Education Department of Anhui Province has made.
The sight of the big cake on the table suddenly _________ me that it is my birthday today.
This produced a chain reaction, _______ made _______ possible for life to develop.
The thought they could the whole continent was exciting.
_________ life will continue on the earth for millions of years to come will depend on __________ this problem can be solved.
--May I open the window to let in some fresh air?-- __________