【C17】A．ensureB．meetC．satisfyD．assure

【C7】A．ensureB．approveC．supplyD．deliver

【C10】A．touchB．meetC．contactD．encounter

【C15】A．ensureB．assureC．reassureD．guarantee

It was difficult for the police to ________ the angry crowd.A、hesitateB、pacifyC、satisfyD

A．ensureB．separateC．spreadD．switch

【C10】A．breakB．closeC．satisfyD．displease