摘要：50．A．couldn’t B．mustn’t C．shouldn’t D．needn’t
网址：http://m.1010jiajiao.com/timu3_id_2473354[举报]
He have attended the concert, for he knew nothing about it.
A．couldn’t B．mustn’t C．shouldn’t D．needn’t
查看习题详情和答案>>In fact, you _________ go outside at all. There’s a supermarket just downstairs.
A．couldn’t B．mustn’t C．needn’t D．shouldn’t
查看习题详情和答案>>You trust an online shop just because it has a beautifully-designed website.
A．shouldn’t B．mustn’t C．couldn’t D．needn’t
查看习题详情和答案>>