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谁能解释下这里spend的用法,这是篇完形填空的开头:Intheearly1800’s,aboynamedJohnlivedinanorphanage(孤儿院)withseveralotherchildren.Everydaywas31workingandChristmaswastheonedayoftheyearwhenthechil

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谁能解释下这里spend的用法,
这是篇完形填空的开头:In the early 1800’s,a boy named John lived in an orphanage (孤儿院) with several other children.Every day was 31 working and Christmas was the one day of the year when the children did not work and received a gift — an orange.
31.A.forced B.passed C.taken D.spent
答案是spent,但是为什么呢?只有spend in doing啊,怎么这里还有个be动词?也不像是被动啊!我知道,A应该是be forced to
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答案和解析
spend some time (in) doing sth (in可以省略的)
怎么这里还有个be动词?
因为这里是被动语态.被动语态的结构是be+过去分词.
Every day was spent (in) working换成主动语态就是:They spent every day (in) working.