Thenewdiscovery_______beofgreatservicetomankind.
A、isboundtoA
be bound to：注定要，一定会。本题中主语是 The new discovery ，所以谓语动词要用is。句意：这项新发现对于人类必定大有用处。
The furniture in her bedroom is quite different from ________ in the living room.
It rained hard yesterday, ______ prevented me from going to the park.
Water is composed _______ hydrogen and oxygen.
Itisdifficultto________theimplicationbetweenthelines.
The central theatre has a seating ________ of more than 3, 000 people.
