When you ______ the book please return it to the library on time.

ose with family members far away, the personal computer and the phone are important in staying________.

_____ you always question everything I say? —Sorry if I make you unhappy; but it’s my habit to question before I believe.[ ]

John prefers_______ alone rather than_______ with his co-workers in his spare time.

The red skirt_______by the beautiful girl yesterday.