A noted poet and anthologist presents his third ``I Can Read'' book, with 30 high-quality selections from well-known poets (Aldis to Wilbur) provocatively grouped under six queries that often cause new readers grief: ``Who?'' ``Where?'' ``What?'' ``When?'' ``How?'' ``Why?'' Many entries are familiar, but the creative arrangement illuminates them afresh, while also giving those pesky words new interest by featuring them in the easily read verse. Croll's bright, stylized art adds just the right decorative note; the real author-title index is a learning tool as well as a useful asset. Just right. (Poetry/Easy reader. 5-9)