It is quite necessary for a teacher to have good manners and__________ knowledge.

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It is quite necessary for a teacher to have good manners and__________ knowledge.

A.extensive

B.expensive

C.intensive

D.expressive

参考答案:

Aextensive为形容词“广大的,广阔的”;expensive“花费的,昂贵的”;intensive为“加强的,集中的”;expressive为“表现的,富于表情的”。