. — Why were you so late for work today? — ____ to the office was not very easy this morning because of the traffic.

We can have ___ bluer sky if we create ___ less polluted world.

Were you sick after six hours’ journey on the coach?-Of course. I ______ quickly as soon as it stopped.

John had nothing to do ______ the matter, ______?— Yes, he did. [ ]

These books are _____. _____ are in _____ bags.