题目

组词。畦 闼 檐 苔 答案：【1】菜畦【2】排闼【3】帽檐【4】青苔--- What do you think of the grammar book?--- Oh, it really is ________ useful reference book, which is worth reading ________ second time.A. a; a B. an; the C. an; D. the; the