诗词填空。     

    花草无语，文人有意，花草折射出入的精神魅力。    

A．菊花里有陶渊明的隐士情怀：“                             ，                            。”    

B．小草里有白居易的进取力量：“                             ，                            。”    

C．莲花里有周敦颐的高洁品格：“                             ，                            。”       

D．落花里有龚自珍的奉献精神：“                             ，                            。”

—  Thank God you're safe!

— I stepped back, just _______ to avoid the racing car. [ ]

A. in time        

B. in case        

C. in need        

D. in vain