题目

34．He told us everything was all right；he was wrong，_________．        A．though                   B．too                         C．yet                         D．for example 答案：A 短文改错 In the nineteen century, the river became very 1．________ dirty because many factories were builded．People 2．________ threw everything they didn't want to into the 3．________ river．Many dirty things got into the river．In 4．________ 1830, the river in London became even worst：no 5．________ fish could live in it, but nobody could drink 6．________ the water．But in middle of the 20th century 7．________ the river was clean again．Although the water not 8．________ used for drinking, it is very clean that some 9．________ fish have returned back to it． 10．________