A lot of fish in the river _______ recently, because there is lots of pollution.

Since you have made so little progress in English, I____you ___ a new learning method next term

依次填入下列各句横线处的成语，最恰当的一组是  ①有人认为反腐败查下去会打击面过大，影响经济发展；也有人认为反腐败会让干部变得缩手缩脚、________，不愿意干事了。②孰仁孰暴，对立分明，而两者之中不能有中立的余地。像伯夷、叔齐那样，既不赞成殷纣，又不赞成周武王，那种________的态度似乎是无法维持的。③在革命的时代里，我们犯了错误——只有些爱国心，而不认识革命道路。细想起来，我们的独立不倚不过是________，但求无过而已。

How was your visit to the Green Expo Garden— Wonderful! We enjoyed verymuch during the whole trip.

You seemed to have been impressed by his songs— Well, not exactly soIt was his way of singing ____ his voice that really impressed me[ ]