Sandy could do nothing but to his teacher that he was wrong.A. admitB. admittedC. admitin

问题补充：

Sandy could do nothing but to his teacher that he was wrong.

A. admit

B. admitted

C. admiting

D. to

答案：

(答案→)A. admit

B. admitted

C. admiting

D. to

解析：本题是惯用法的考查。but后引导的动词通常情况下用to do，但若but前出现动词do，则省略to，直接使用动词原形。