-- The thread of my kite broke and it flew away.
-- I had told you it would easily break it was the weakest.
A. when
B. since
C. unless
D. where
网友回答
A. when
B. since
C. unless
(答案→)D. where
解析：连词辨析。When当……时候； since自从……以来，由于；unless除非；where在哪儿。句意：我的风筝的线断了，它飞远了。——我告诉过你它非常容易断，那是最薄弱的地方。