根据图片提示完成各个对话。( 10分)
(1)
—What is the ________ doing?
—It's ________.
(2)
—Is the frog ________?
—Yes, it ________.
(3)
—What ________ the monkeys doing?
—They are ________.
(4)
—________ the koala bears ________ trees?
—Yes, they can.
(5)
—Is Zip ________ an email?
—________, it is.