—Can i help you ,sir?____Yes ,I bought this radio here yesterday ,but it___work Acan't B doesn't

问题描述:

—Can i help you ,sir?____Yes ,I bought this radio here yesterday ,but it___work Acan't B doesn't
为何不选A

can是情态动词,表示具有某种能力或意愿.radio不能用,不是有能力而不愿工作.用doesn't表示客观说明.