---- _________ there any grass and trees in front of your house?---- No, but behind the house ________ some trees.
I have two sisters. One is a doctor, _______ is a teacher.
Peter is ten years old. He is _______ to go to school.
Does your friend _______ English?
My teacher’s words made me _______ trying and never give up
My flight to Tokyo _______ from Beijing International Airport.