look,there are some boys ( have) fun in the ball

look,there are some boys ( have) fun in the ball Look! The boys are having fun _____ with the ball. &nbs Look!The boys are having fun with the ball.[ ] A.play B.to p Look!There ___ some boys on the playground.A.are B.is C.have 英译汉：Also there are some boys playing ball games. there are some boys ----(swim) in the pool there are some boys swimming in the pool There are some boys in the classroom 改为否定句 Look!Some boys ()(run)in the playground. there are some American Boys in chassis There are some boys running in the playground.对some提问,对some Are there some boys in the picture? yes,there are _____.