给下列句子排列顺序，最恰当的一项是[ ]

①清风徐徐，树枝摇曳，斑驳的光影洒落在地上和小狗身上

②绿阴下是一间小小柴房

③这就构成一幅盛夏城郊小院图，生动而又富有情趣

④柴房前，主人在吸着烟斗，一只小狗闲适地躺在一旁

⑤窗前一片浓浓的绿阴

A、③⑤④②①

B、⑤④②③①

C、③⑤②④①

D、⑤②④①③

She often helps the old ____ their housework.[ ]

A. of

B. in

C. at

D. with