【C7】A．concernsB．concernC．concerningD．concerned

A．advantageB．concernC．benefitD．importance

【C7】A．issueB．concernC．certaintyD．accident

He subscribes to a number of journals______his subject.A．relatingB．overC．concerningD．aroun

【C12】A．careB．concernC．attentionD．intention

【C15】A．consideringB．withC．concerningD．without

A．concernsB．containsC．intendsD．involves