问题
选择题
—Can you keep a 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
答案:A 考查情态动词。句意为:你能帮我保守秘密吗?你不必担心,我不会向任何人提及的。needn't不必要;couldn't不能够;mustn't禁止;won't将不会。根据句意可知,答案A符合语境。