1.____he____(clean) the windows once a week?

1.____he____(clean) the windows once a week?
2.How long____you____(stay) there the day before yesterday.
3.Who____(listen) to the music?
4.When I____(be) a middle school student,I often____(sing).
5.His parents____(go) to the Great Wall tomorrow morning.
6.____they____(study) Japanese next term?
7.What time____you____(do)your homework everyday.
8.What____your after____(do) yesterday?
I____(write) two letters.
9.There____(be) a football match on TV this evening.
10.____(be) there any hospital here twenty years ago?
11.I____(come) to see you again before long.
12.____there____(be) an English evening next Saturday?