Please keep quiet everybody! I have important to tell you.A. anythingB. everythingC. noth

问题补充：

Please keep quiet, everybody! I have important to tell you.

A. anything

B. everything

C. nothing

D. something

答案：

A. anything

B. everything

C. nothing

(答案→)D. something

解析：句意：大家，请保持安静！我有重要的事情要宣布。A. anything主要用于否定句或疑问句；B. everything每件事情； C. nothing没有事情； D. something某件事情。主要用于肯定句。因为这里是肯定句，所以这里应该用something，故选D。