题文
---- There’s no light on. ---- They ________ be at home.
| A.can’t | B.mustn’t | C.needn’t | D.oughtn’t to |
推荐试卷
---- There’s no light on. ---- They ________ be at home.
| A.can’t | B.mustn’t | C.needn’t | D.oughtn’t to |
试题篮
()