From his       looks, we can decide that he’s come across       problems.
A．puzzling; troubled B．puzzling; troubling C．puzzled; troublesomeD．puzzled; troubled
C
“從他那吃驚的表情，我們斷定他遇到了麻煩事�！� puzzled吃驚的，puzzling令人吃驚的，troubling 令人煩的，所以答案C。
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