— Must I go to the shop with you, Mum?

— Err...I can make it myself, Mike. You             go with me. [ ]

A．mustn't

B．shouIdn't

C．wouldn't

D．needn't

销售前的质量管理要抓好（）工作。

A、广告宣传

B、包装运输

C、出库保管

D、售后服务