There is ________ useful book on the desk， _________ useful book belongs to my brother．

If you want to keep healthier, you must eat ____ vegetables and _____meat.

The story is very ________ and I am ___________ in it .

1t is very important ______ us to get on well with others.[ ]

.Man’s shopping can be and often is completed in five minutes，which is less than a quanrter ________。