children后面接动词三单还是复数形式?children本身是复数还是单数?The child __ trees for the whole four hours with his parents.接has been planting还是have been planting?

children后面接动词三单还是复数形式?children本身是复数还是单数?The child __ trees for the whole four hours with his parents.接has been planting还是have been planting?
children后面接动词三单还是复数形式?children本身是复数还是单数?
The child __ trees for the whole four hours with his parents.接has been planting还是have been planting?

children后面接动词三单还是复数形式?children本身是复数还是单数?The child __ trees for the whole four hours with his parents.接has been planting还是have been planting?
children 是child的复数.
the child是单数,has been planting
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children是复数，child是单数

children 是child的复数形式，child 后面接单数，children 后面复数