Lora you leave all your books on the floor like this!A. wouldn’tB. mustn’tC. needn’tD. ma

问题补充：

Lora，you leave all your books on the floor like this!

A. wouldn’t

B. mustn’t

C. needn’t

D. may not

答案：

A. wouldn’t

(答案→)B. mustn’t

C. needn’t

D. may not

解析：考查情态动词。A．wouldn’t不会；B．mustn’t不允许；C．needn’t不必；D．may not也许不。句意：Lora，不允许你像这样把你所有的书扔在地上！。故B正确。