What are they ( ) A talking B talking about C looking为什么

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What are they ( ) A talking B talking about C looking为什么
What are they ( ) A talking B talking about C looking
为什么

What are they ( ) A talking B talking about C looking为什么
B如果与talk有关,what在句中是宾语,talk是不及物动词,要加介词构成介宾结构.look也是这样

选B

talking about