Question

The teacher doesn’t allow ________ in the exam．

1. A.
   his students to cheat
2. B.
   his student’s cheating
3. C.
   to cheat
4. D.
   his students cheat

Answer 1

A
解析：
allow的固定搭配有：allow sb．to do sth．和allow(sb．/sb’s)doing sth．。B项的“‘”应在s后面。