Question

 Perhaps most _______ of all, we were not able _______ what we heard.

A. astonishing; to make no sense of

B. puzzled; making sense of

C. astonished; making no sense of

D. puzzling; to make sense of

Answer 1

解析：选D。句意：大概最令人不解的是，我们不理解我们所听到的。第二个空处一定是不定式，所以可以很容易排除B、C两项；we were not able后面不可能再用否定，所以A错误。可见，只有D正确。