What is this?
选项：

A:They
B:It's
C:They
D:That
E:They
F:It's G:They H:That I:They J:It's K:That L:They M:They N:They O:They P:They Q:hen. R:cow. S:goats. T:horse. U:it V:this W:these X:that Y:red Z:green [:red \:orange ]:potato;tomato ^:tomato; _:potatoes;tomatoes `:tomatoes; a:like b:like c:don’t d:isn’t e:am f:aren’t