Whom do you think Mary will into the matter instead of her?A. have lookedB. have to lookC

问题补充：

Whom do you think Mary will into the matter instead of her?

A. have looked

B. have to look

C. have had looking

D. have look

答案：

A. have looked

B. have to look

C. have had looking

D. have look

解析：句意：你认为玛丽会让谁代替她调查这件事？这里使用了词组have sb do sth，因为这里用了疑问句，用whom对sb提问，所以have后面没有宾语，所以选D。