I find it impossible for me _______ my old friends. This often makes me _____ sad.
A:meet; to feel
B:to meet; feel
C:meeting; feeling
D:met; felt
生活中国,我们接触到的事物很多都蕴含着丰富的地理知识.读下图,50元人民币上景观所在地区的主要少数民族为( )