Question

According to the rules and regulations, all payments ________ be made in cash in the shopping center.

A．shall	B．can
C．must	D．should

Answer 1

A

选A　考查情态动词。句意：按照规章制度，在购物中心购物必须用现金付款。shall用于第二、三人称时，可表示命令，意为“必须”，符合题意。