His letter was especially welcome as I ____ from him for long
Look at the boy running on the ground. Is it David– It _______ be him. I saw him go to the teacher’s office just now.
It was already one in the morningI saw the dull yellow eye of the creature open.
It’s going to rain. Xiao Feng, Will you please help me _____the clothes on the line?
________ to come over to have a talk with him in those days.