He allowed me the experiment.A. to doB. doC. doingD. did

问题补充：

He allowed me the experiment.

A. to do

B. do

C. doing

D. did

答案：

(答案→)A. to do

B. do

C. doing

D. did

解析：allow sb. to do sth.=let sb. do sth. allow后跟动词不定式.