Question

He realized she was crying ________ his words.

A．because

B．because of

C．as

D．since

Answer 1

B

試題分析：考查because 和because of，意思都是因為，because引導句子，而because of引導名詞或名詞性短語，as意思“作為”，since意思“自從…”，句子意思“他意識到因為他的話她就哭了”，所以選B
點評：注意because 和because of的區別，做題時要細心，句子He realized she was crying because of his words.是個賓語從句，省略了引導詞that。