We ________ take clean drinking water for granted. One day we may run out of it.
—How much should I pay for the ice cream? —It's my ______.
______ studying abroad can be hard, it can broaden your understanding of the world.
When I came in, I found Lucy ______ by the window ______ to music.
The lady who had invited us heard me telling my wife that the dinner was terrible, so I was ______ .
I need to call my friend David ______ coat I walked off by mistake yesterday.