The goods on this counter ____ at a discount of 25%, like the typewriters, television receivers, dustbins, etc.[ ]

_____ is estimated is that 300 million farmers will become urban dwellers in three decades.

The song is about a couple forced to separate _________, but they valued the memories of their love all their lives

He was so foolish _____ his car unlocked.

填入下面一段文字横线处的语句，最恰当的一句是余光中坦言，他一度自称“右手写诗，左手写散文”，意思是 。但没想到的是，更多人却对他的散文表示更多的好评。于是他就改变了初衷，把诗歌和散文当成自己的两只眼睛，双眼并用，更加立体形象地看事物，看人生。