2, it is the word plus the radical soil to form a new word dike. Group words: dike, dike, dike, dike, dike, sub-dike and dike.
3, it is a word plus a radical to form a new word key. Composition: spoon, teaspoon, spoon, spoon, key.
4. Add the word "yes" to the front page of the department to form a new title. Composition: Inscriptions, inscriptions, quotations, exercises.
5. Add radicals to words and add new words. Word combination: push, refresh, provide, remind, propose, pen, support, prompt, bill of lading.