How many countries held the World Expo before the year 2010?What are they?如何用英语回答呢？

How many countries are there in the How many f( )countries have you visited? How many countries have you been to____ _____? About four how many countries are using Euro?Especially in north Europe... How many countries can you name? 怎么回答? How many countries are there in the South America? how many countries inasia and what they name How many countries are there in mainland South America? How many f（ ）countries have you visied? Who knows how many countries there are on the earth How many countries does the UK consist of? how+many+countries+does+the+uk+(consisting+of)?为什么不对 How many h( ) are there tomorrow How many famous characters from the history of other countries?Make a list.人工翻译、 英语填空 世界上有多少个国家 How many countries are there-------- --------- --------- how many countries are there in the world?(please write it in english) how many things are made in foreige countries from these ads? how many countries were there on the earth in 3025 的意思