–Do you know the boy ___ is standing under the tree?-Yes, he is my friend, Peter.
The doctor told me to take this medicine ____.
The little girl made money ___ selling flowers.
Our Chinese like eating moon cake ____ Mid-autumn Day.
Would you mind not picking up the flowers in the garden? They are ____ everyone’s enjoyment
I get up early ____ the morning, but ___ Sunday morning I get up very late.