--Why do you want to be a teacher, David? --Because I like children and I can feel happy ___ them. A.in B.between C.among
—Who helped Li Lei with his English? —______, he learnt it by himself.
Not only my classmates but also my teacher ________ watching football games.
Would you like ________ for a walk after supper?
Don’t worry about ________. He can do it well by himself.
—Is this camera mine? —No, it isn’t________. It’s________.