A small car is big enough for a family of three ____ you need more space for baggage.
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?-- __________