填入适当的疑问词或疑问词组。

1. ____________ season do you like best?  Fall.

2. ____________ are they?  Twenty yuan.

3. ____________ students are there in your class?  There are thirty-seven.

4. ____________ do you go to school?  I go to school at 8: 00.

5. ____________ do you do on the weekend?  I go hiking.