ti isn't easy for the child____that age to solve such a diff

ti isn't easy for the child____that age to solve such a difficult problem
恋上峰情 1年前 已收到4个回答 举报

hupan_321 幼苗

共回答了18个问题采纳率:94.4% 举报

It isn't easy for the child【at】that age to solve such a difficult problem

1年前

10

gxho1794 幼苗

共回答了2个问题 举报

好好学习
天天向上

1年前

1

农夫熊 幼苗

共回答了15个问题 举报

at

1年前

0

rust00 幼苗

共回答了1个问题 举报

用介词 at 。

1年前

0
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