【C7】A．advisingB．suggestingC．demandingD．calling

A．calling onB．calling forC．calling offD．calling in

【C4】______A．calling offB．calling forC．calling uponD．calling up

【C17】A．called forB．called offC．called upD．called back

【C7】A．pleadingB．beggingC．insistingD．calling on

We regret ______ you that we no longer manufacture the item you have ordered.A．advisingB．t

55._________A..calling onB..calling forC. calling