题目内容：

Amy suddenly _____ of buying some bread for breakfast as she _____ past a supermarket.
A.thought; walked
B.was thinking; walk
C.thought; was walking
D.was thinking; walking

优质解答

C,句意：当Amy 经过超市的时候,她突然想起要买些面包早餐吃.
第一问,表示单纯的过去时,第二问,表示过去进行时,表示她正经过超市时