677.In face of the fire,he hesitated for a while,______ whether he should rush into the burning house.
A.to think
B.thought
C.thinking
D.and thought
678.His feature story opens and closes with descriptions of two news reports,each ______
one major point in contrast with the other.
A.makes
B.made
C.is to make
D.making
677.答案是C;此题中的thinking表示伴随。
678.答案是D;each与make之间为主动关系，此处为独立结构。
