Question

A computer cannot remember who_________；it simply does what __________.

1. A.
   will use it; it was told
2. B.
   uses it; it has told
3. C.
   has used it; it was told
4. D.
   has used it; it told

Answer 1

C
前一个分句中连接代词who引导一个宾语从句，用现在完成时表示说话以前所做的动作；后一个分句中连接代词what引导一个宾语从句，该从句表示的是说话以前某时所做的具体动作，应用一般过去时.主语是谓语动词动作的承受者应用被动语态.答案为C.