很高興為您
4.The number of people who_____ killed in the Air France crash(墜毀)_______ 228.
A.was; was
B.were; was
C.were; were
D.was; were
The number of ...表示"...的數(shù)量",謂語(yǔ)（第二個(gè)空）用單數(shù),排除CD
who ...killed in the Air France crash 這是一個(gè)定語(yǔ)從句修飾復(fù)數(shù)名詞people,所以從句謂語(yǔ)用復(fù)數(shù),排除AD
答案：B
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-------------------------------那為什么第一個(gè)空不用waswho ..定語(yǔ)從句 修飾的是people, who即指代復(fù)數(shù)名詞people，所以其后謂語(yǔ)用復(fù)數(shù)