—Canchildrenundertheageoftenridebicyclesinyourcity?—No,...

问题详情：

— Can children under the age often ride bicycles in your city?

— No, according to the law, they ____.

A. may not     B. needn’t           C. mustn’t      D. shouldn’t

【回答】

C

知识点：情态动词

题型：选择题