The new discovery _______ be of great service to mankind.
A、isboundtoA
beboundto：注定要，一定会。本题中主语是Thenewdiscovery，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。
Themeeting_____nextweekwillbeofgreatimportance.
Aftermonthsofvoyage,Columbusarrivedin______laterprovedtobeanewcontinent.
Thefurnitureinherbedroomisquitedifferentfrom________inthelivingroom.
Theyareeager_______abroad.
Idon’tneedanyhelpatthemoment,butI_____youroffer.
