⑴—What's this?

—It's the wheel (轮子) of a train. {#blank#}1{#/blank#}                                 A.  

⑵—Wow! So many butterflies and bees!

—Yes! There are a lot of ladybirds too.{#blank#}2{#/blank#}                         B.

⑶—Amazing! This car has only three wheels!

—Yes, it is really cool! {#blank#}3{#/blank#}                                                    C.

⑷—So many nice pictures. I like this one. What about you?

—I like all the pictures here!{#blank#}4{#/blank#}                                          D.