根据下面句子中的提示从下列词组中选２个填入：

          a hard nut to crack
          a small fry
          a wet blanket
          a cold fish

1. A: Did you catch him, sergeant?
    B: No, this is just the _____________(无名小卒，小角色). The head of the gang is still at large out there somewhere. But don't worry, I'll get him sooner or later.

2. A: Who's the guy sitting down at the back, why doesn't he come up here and dance with us?
    B: That's John - he's a real _____________ (令人扫兴的人). He'll probably sit there all night.

■点击查看参考答案■