【C4】A．worriedB．concernedC．troubledD．shocked

【C15】A．puzzledB．confusedC．troubledD．disturbed

John is crazy about pop music.A.worriedB.concernedC.madD.sorry

【C12】A．resolvedB．concernedC．involvedD．relevant

【C6】A．worriedB．concernedC．anxiousD．nervous

【C15】A．relatedB．concernedC．unitedD．associated

【C3】A．worriedB．annoyedC．surprisedD．pleased