Most of his income came from interest ______ on loans and investments in real estate.
A、
earn
B、
earned
C、
to earn
D、
was earned
【正确答案】
B
【答案解析】
本题考查后置的过去分词作定语。A、C两项可首先排除，因为A项为动词原形，不可作定语，而C项的不定式和句子表示的时间不符；D项若加上which也可选，故本题应选B。
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