You should not go rafting ________ you know how to swim

The happiest people don’thave the best of everything They just _______ everything

Has your uncle come back from England for a summer holiday —-Yes. But he _________ at home for only a few days. Now he has been back to London.

There are many people in the park. Some are walking along the lake. _________ are sitting on the grass.

Basketball players need to eat ______.