.We can never expect _________ bluer sky unless we create _________ less polluted world.
Is this the place_____ John was born?
The suggestion ________ by the teacher is available.
To make members of a team perform better, the trainer first of all has to know their ______ and weaknesses.
The medical reform in that country proved to be _____ failure, but as we know, success often comes after _____ failure.
— Could you turn the TV down a little bit? —________.Is it disturbing you?