Whether you go or not, _______ is quite all right with me.
All that can be done _______.
The man couldn’t _____the fact that the lost watch was found in his house.
Towards _______evening, ________ cold rain began to fall down.
Whether life will continue on the earth for millions of years ______will depend on ____this problem can be solved.
We expressed the hope________ they would come and visit our hometown again.