单选题 That contract, about ______ we had a disagreement last month, had now gone through.
A. whom B. which C. what D. that

【正确答案】 B
【答案解析】本句的意思是：“上个月我们发生争执的那项合同现在通过了。”本题考查关系代词的用法，注意从句中关系代词前有介词时，只能用which连接。