--- I’ve heard Jenny has just bought a BMW X5.
--- I she has so much money.
A. don’t know
B. didn’t know
C. haven’t known
D. hadn’t known
网友回答
A. don’t know
(答案→)B. didn’t know
C. haven’t known
D. hadn’t known
解析：句意：我听说Jenny买了一辆宝马。--我不知道她有这么多钱，此处表示的是答话人在此之前不知道 Jenny 有这么多钱，竟然买了一辆宝马，所以用一般过去时。所以用一般过去时。选B。