I have an appointment________Dr. Smith, but I need to change it.

Only in that way _____find out how this kind of animal lived and then finished the research on time.[ ]

Many in the credit industry expect that credit cardswill eventually ________ paper money foralmost every purchase.[ ]

She spent four weeks which she could afford _______ around the country, promoting her new album.

His parents, ________, did not look after him very well-the elbows of his jacket and his boots were badly worn [ ]