She ran very fast but it __(is) too late 用正确形式填空

问题描述:

She ran very fast but it __(is) too late 用正确形式填空
in face,the sun is ___(big) thing in our solar system.
my ____(pencil) are in the pencil box.
there are some flowers on the ___(teacher) deak.
it's bad for your __(eye)

was
the biggest
pencils
teachers'
eyes