Remove the batteries when they become weak or when the unit is not in use for extended periods. This will damage to the unit from battery leakage at such times.

c. don’t have toD. needn’t to

Alone as she is, she is kept so busy with her work for women’s rights that she feels ____ lonely

We are planning to have a casual get-together this Saturday or Sunday. Are you coming?— ________. I’ve got rather a full day this weekend.

You must be tired now. Why not ________ to havea rest