—Is this your eraser? —______.
Oh, dear! There isn’t enough _____ for us in the lift. Let’s wait for the next.
I first met Lisa three years ago. She ________ at a radio shop at the time.
. As a volunteer, he often goes to the hospital to ________ the sick.
_______ of the students will take part in the sports meeting.
Trees and flowers ________every year to make our country more beautiful.