it was__terrible earthquake and __number of people who were killed reached more than 20000.
第一个杠是a,第二个杠是the.
想问一下、那个the number of是……的数量,后面用is/was,但是这个“people who were killed”用的是were、这是怎么回事.
还有就是所谓的金刚名词有哪些、有什么固定的短语用冠词的.