【C8】A．forB．asC．toD．with

【C8】A．byB．asC．onD．with

【C8】A．intoB．byC．toD．with

【C9】A．forB．forC．toD．on

【C8】A．ForB．WithC．ToD．On

【C18】A．forB．ofC．toD．with

A few years ago all of them were classed ____ plants.A: forB: asC: toD: into