Listen carefully and fill in the blanks with the exact words you have just heard . 1. First up, every city that's hosted the Olympic s in recent years has faced considerable( 1 ). Rio de Janeiro(里约热内卢), Brazil, is (2). 2. Just days ago, a warning from more than 100 international doctors, calling for the s to be ( 3 ) or moved, because the mosquito-born ( 4 ) could threaten an expected half a million foreign visitors. 3. We live in a country that has economic cr, a country with lots of ( 5 ). With all the problems that we have seen concerning corruption, briberies.