Question

Mrs.Brown was much disappointed to see the washing machine she had __ went wrong again.

Answer 1

答案c
“看到找人修的洗衣机又坏了，布朗夫人非常失望。”washing
machine之后为定语从句，引导词that/which在从句中作had的宾语而省略，故a、b两项不可选；d项句意不通，亦不可选。该题使用的是have
sth．done结构，其中从句使用了过去完成时态。
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Answer 2

这里有两点要注意：1.是一个定语从句
2.用到了have
sth.
done结构
这个句子的完整形式应该是Mrs.Brown
was
much
disappointed
to
see
the
washing
machine
that
she
had
repaired
went
wrong
again.
定语从句的关系词that实际上充当了have
sth.
done结构中的sth.
所以当然不能再用一个it，同时可以看到that这时是作宾语的，所以可以省略掉，于是成为Mrs.Brown
was
much
disappointed
to
see
the
washing
machine
she
had
repaired
went
wrong
again.