单选题：（　　）waspointedabove,thissubstancecanbeusedasasubstitute．

题目内容：

（　　）waspointedabove,thissubstancecanbeusedasasubstitute． A．It
B．That
C．What
D．As

参考答案：

答案解析：

Theoldlady（　　）onhearingherson'sdeath．

Theoldlady（　　）onhearingherson'sdeath． A．brokein B．brokedown C．brokeout D．brokea

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Weallenjoy（　　）． A．havingonlyreliableincome B．havingreliableincomeandextraincome

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