Let us not waste ______ time we have left.
Are you clear _____ what has been taught in this class? That is: Is everything that has been taught in this class clear _____ you?
The determined look in their eyes told us that nothing could make them ______.
---Where did you pick up this wallet? ---It was in the supermarket _____ I did some shopping yesterday.
I read every detail of her travel journal, and_____ the bravery she displayed in face of danger.
If you are not familiar ____ the topic, you may write something that is familiar ____ you.