结合预习的内容完成下列词形转换：
1、achieve vt. _____________ (n.) 6. preparation n. ___________ (v.)
2、German n. _____________ (pl.) 7. require vt. ______________ (n.)
3、immediately adv. __________ (adj.) 8. scary adj. _______________ (v.)
4、develop vt. _____________ (n.) 9. nature n. _______________ (adj.)
5、inform vt. ______________ (n.) 10. please v. _______________ (n.)
