【C17】A．betweenB．amongC．fromD．within

【B6】A．betweenB．duringC．acrossD．throughout

【C17】A．onB．atC．inD．within

A．betweenB．underC．within

A．ofB．amongC．betweenD．from

【C12】A．betweenB．onC．inD．for

A．betweenB．untilC．fromD．for