A．randomB．rareC．regularD．rough

【C17】A．rawB．rareC．rowD．roar

【C9】A．randomB．targetedC．intenseD．curious

【C19】A．spareB．rareC．freeD．loose

【C17】A．intenseB．professionalC．regularD．strict

【C4】A．seriousB．difficultC．regularD．convenient

【C3】A．formalB．continualC．regularD．circular