問題補充：
單選題
In fact, the house as well as his two cars ________ him all the money he earned during the 20 years．A.has been costB.have costC.has costD.have been cost
網(wǎng)友答案：
熱心網(wǎng)友 1樓
C解析as well as連接兩個部分做主語時，謂語動詞要根據(jù)前一部分來判斷，因此用單數(shù)；而sth cost sb money，因此不用被動。
