This small village _____ quiet. A.used to be B.used be C.used to do
Her voice ____ sweet. It _____ a bird.
—Remember this, children. ____ careful you are, ____ mistakes you will make. —We know, Miss Gao.
There are many young trees on ______ sides of the road.
________ of them has his own opinion.
The box is_______ heavy for the girl _______ carry.