請根據(jù)短文內(nèi)容，用方框中所給詞的正確形式填空，使短文完整、正確。（每個詞只能用一次，有兩個多余詞）

by but they learn well when hard shock language foreigner who know

Giuseppe Mezzofanti was an Italian who was perhaps the best language learner ever.
   He has learned many languages （1）

by

by

himself and can speak more than 38 languages fluently（流利地）.He has never left Italy （2）

but

but

he learned to speak these languages without any accent（口音，土音）.People from all over the world came to communicate with him in their own mother tongues.All of them （3）

were amazed

were amazed

by his fluency.
   When Mezzofanti was 12，he spoke his native（本地的）tongue，Italian，as well as German，Greek，Latin，and at least five other languages.Then he （4）

learned/learnt

learned/learnt

Arabic，Russian，Hindi，Old English and Maltese.He also learned Chinese.This was the（5）

hardest

hardest

language for him to learn--it took him four months.
   Some stories say he also spoke 30 other languages quite（6）

well

well

and that he could understand another 20 （ for example，Tibetan and Icelandic）.
   Another story says that he heard a conversation of two（7）

foreigners

foreigners

in a prison in Rome.Then he learned their languages in one night and spoke to（8）

them

them

the next morning.
   It's hard （9）

to know

to know

if all these stories were true.Some people，for example，ask， "How did he learn Old English without meeting anyone（10）

who

who

spoke it？" or "Did he really learn a language in a few weeks or even in one night？" We don't know for sure，but we can say for certain that Giuseppe Mezzofanti has become a language-learning legend（傳說）.