Listen! I hear some birds ___________ the tree.A. sing in B. singing in B. sing on D. singing on
The train_________the train station at 8:40 every morning .
My school isn’t far from here. It’s only _____ walk.
It’s my dream ________________a big house.
—Do you get a _________? ---Yes, I__________in a school.
He ____ his homework ____ Sundays.