Thebossdidn'tlikeJamesbecausehewasnot

問題詳情：

 The boss didn't like James because he was not _________learning new things.  

A. afraid of                        B. worried about    C. tired of                                   D. good at

【回答】

D

解析：be good at 意思是“擅長，在某方面做得好” ，與句意相符。

知識點：動詞和動詞短語

題型：選擇題