This book is said to be a special one, which______ many events that cannot be found in other history books.
A study shows that walking fast in your old age is a ______ that you will live a long life.
— Where _______ you put my dictionary? — I left it on your desk when you _______ to Tom.
Raising children is said to be a job _______ parents receive the least formal training.
_______ blood if you can and many lives will be saved.
— I saw Dave in the lift this morning. — Really? He _______ around here for a long time.