单词拼写。 根据下列句子及所给汉语注释，在句子右边的横线上，写出空缺处各单词的正确形式。 （每空只写一词） 1. They had left the _______(行李) at the station. 2. All the universities have duty to keep their students _______(见闻广的,了解情况的) of the quick development of the scientific world. 3. The invention of the computer is a great _____________.(成就 ) 4. I am going to say what I think of him openly and p________.(公开地 ) 5. Everyone is responsible for the _________ (创造；建立) of a better environment. 6. People living in this area get sick easily and they are left ______(无保护的)from environmental pollution 7. This medicine will ______(保证, 担保, 确保) you a good night's sleep. 8.'Thank you' - two _________(强有力的) words. They're easy to say and mean so much. 9. The events took place on a cold ________(二月)morning. 10. The bank has _______(分公司;分店) all over the country.