【C19】A．beforeB．afterC．onD．until

【C20】A．beforeB．whenC．sinceD．until

【C15】A．beforeB．afterC．includingD．excluding

【C14】A．beforeB．afterC．whileD．for

【C10】A．BeforeB．AfterC．WithD．For

【C5】A．inB．afterC．onD．over

【C5】A．beforeB．thatC．soD．until