Without facts, we cannot form a worthwhile opinion for we need to have a factual knowledge ________ our thinking.

Do you know the lady over there – Oh yes. ______ is my English teacher.

I called the airline to _____ my flight reservation a week before I left for Canada.[ ]

_____ pencil box is beautiful. But_____ is more beautiful than _______.

w more and more people prefer tohave a ______ at home — a little dog, a cat or some other animals