“按订单组织货源”坚持以市场需求和(　　)为导向。

A．客户需求

B．商业企业需求

C．生产企业生产需要

D．价格杠杆

There _____ be any difficulty in passing the road test since you have practised a lot in the driving school.

A．mustn’t

B．shouldn’t

C．shan’t

D．needn’t