-what are these?-These are pictures.这个句子有一处错了,在哪里,订正出来

-what are these?-These are pictures.这个句子有一处错了,在哪里,订正出来 what are these?these are books.哪里错了 what are these ? These are ( )? what are these?----these are apples.(给句子改错） These are some potatoes over there.这个句子哪里错了 what are these?or whose are these? what are these ones? what are these? what are these keys ( what.are.these?中文 These are pencils-boxes哪里错了? Are these your friend哪里错了