问题补充:
From the expression on her face, we knew that the problem was .
A. puzzling….puzzling
B. puzzled…puzzled
C. puzzling..puzzled
D. puzzled..puzzling
答案:
A. puzzling….puzzling
B. puzzled…puzzled
C. puzzling..puzzled
(答案→)D. puzzled..puzzling
解析:前空意为:令人感到困惑的。后一空用puzzling说明这个问题本身上使为难的;费解的;令人困惑的。