Question

_______________ while writing, he locked himself in his study.

1. A.
   Not to interrupt
2. B.
   Not being interrupted
3. C.
   Not to be interrupted
4. D.
   Being not interrupted

Answer 1

C
考察不定式做目的状语。不定式的否定式是在前面直接加not；结合句意可知C正确。句意：为了在写作时不被打扰，他把自己锁在了书房里。