How pleased the Emperor was _____ what the cheats said!

I don’t know if it _______ tomorrow . If it ______ ,I won’t go there.

It was not until she failed in the exam ______she realized the importance of study.

The boy is old enough to ________ the difference ________ right and wrong.

Itisimaginationmakes the world colorful, full of vigour and vitality.[ ]