【C18】A．atB．inC．forD．on

【C7】A．atB．toC．forD．over

【C18】A．atB．toC．inD．of

【C18】A．give upB．give inC．draw upD．draw on

【C19】A．withB．inC．forD．on

A concert will be held here_____ 4 pm _____Tuesday.A. on... atB. in...inC. at... on

Visitors are asked to comply _____ the regulations.A.atB.inC.withD.on