Miss Wang: Hello, Helen. You look worried.____ ?
Helen: It’s Li Hong. She’s so unhappy.
Miss Wang: Oh dear! ____ . What seems to be the problem?
Helen: She is crying in the bathroom because she did badly in the English exam .She is very strict with herself. You know, Li hong is new here . She is quiet and shy. She feels very lonely because she has no friends to talk with. ____ .
Miss Wang: ____ . I think I should have a talk with her.
Helen: Oh, yes, Miss Wang.____ .

$\frac{3}{8}$  、 $1\frac{21}{42}$  、 $\frac{3}{15}$  、 $\frac{3}{9}$  中，能化为有限小数的有（）个。

用所给词的适当形式填空

下列词语中，没有错别字的一组是（   ）