89.To save money for my education,my mother often takes on m

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  • 这道题我查了一下网上的资料选D

    than作关系代词时,一般用在形式为比较级的复合句中,其结构为形容词比较级(more)...than+从句,than在从句中作主语,相当于that,代表它前面的先行词.than 作关系代词,先行词就是more work,所以就不需要that,it等代词了.

    比如:You spent more money than was intended to be spent.

    你花的钱超过了预定的数额.(than是关系代词,在句中作主语,其先行词是money)