who p( )whit millie under the big tree?who in your class is your b( )friend?we must do morning e( )carefully.it's good for our health.

问题描述:

who p( )whit millie under the big tree?who in your class is your b( )friend?
we must do morning e( )carefully.it's good for our health.

1.plant
2.best
3.exercises