问题
选择题
(2013·济南一模)—Can you keep the secret?
—You ________ worry — I'm not going to mention it to anyone.
A.needn't
B.couldn't
C.mustn't
D.won't
答案
答案:A
选A 考查情态动词。句意:“你能保守这个秘密吗?”“你不必担心,我不会向任何人提及它的。”根据句意可知应选needn't,表示“不必”。