Themeeting_____nextweekwillbeofgreatimportance.
A、tobeheldA
谓语动词用了将来时态，所以选不定式作定语，表将来。
The professor asked a question, and David ________ a good answer.
Decisiononwhetherthemessageisrightorwrongshouldatleastcomeafter_____whatthemessageis.
When you're_____ a crisis, it often helps to talk to someone.
The new discovery _______ be of great service to mankind.
The meeting _____ next week will be of great importance.
