Чому Повість-казку про русалоньку з 7-В називають ще й краєзнавчим детективом (помогите пожалуйста, дам 15 баллов)

Which is right?Complete the sentences.

1 It often.............(rain /  rains  / raining ) here.

2 It is....................(snow / snows / snowing )  now.

3 Jane ...............(like /likes ) to play with...........(his / her ) dolls.She................(play /plays / is playing ) now.

4 You can't ..................(speak   / to speak / speaking ) to the manager now. He.........(speak / speaks / is speaking ) to Mr Smith.

5 Jack ................( speak /speaks / is speaking )English at home.

6 Who..............(want /does want / wants ) to study French?

7 Your mother's uncle doesn't often visit you,  ...................(does  she / does he / do you )?

8 The  ................(students / students's / students ' ) bikes are not here.

9 I like................(the Smiths / the Smith's /  the Smiths' )dog.

10 It often snows here in Desember,  .............( is it  / isn't it /  doesn't it)?