Question

It's good manners to ________ from your cell phone when someone is talking to you.

A.look down· B.look out C.look up.

Answer

C

【解析】

句意：当有人和你说话时，不要看手机是一种好的礼貌。
考查动词短语。look down俯视，look out注意，look up抬头看。根据句意可知当有人和你说话时，最好把头从手机上抬起来，look up from意为“从……抬起头”，look up符合题意，故选C。