At the shopping centre, he didn’t know what and with an empty bag.
A. to buy; leave
B. to be bought; left
C. to buy; left
D. was to buy; leave
网友回答
A. to buy; leave
B. to be bought; left
(答案→)C. to buy; left
D. was to buy; leave
解析：“在购物中心他不知道买什么，空着包走了。”第一空疑问词+不定式作宾语，第二空和didn’t know并列作谓语，答案C。