The boy didn’t go to school his illness(疾病)。A. becauseB. because ofC. ifD. but

问题补充：

The boy didn’t go to school his illness(疾病)。

A. because

B. because of

C. if

D. but

答案：

A. because

(答案→)B. because of

C. if

D. but

解析：B 考查because和because of的用法。because加句子，而because of加名词或名词短语。“那个男孩因为生病而没去上学”。