Составить 8 предложений since/for

1) I have been living in this huge city since 2005.

2) Daniel has been smoking cigarettes and drinking alcohol for seven years.

3) Ariana has been singing since your childhood.

4) Mrs. Jackson has been teaching Russian language for eleven years.

5) They have been doing homework for two hours.

6) Polly's friends have been decorating flat for her birthday since morning.

7) Jane has been reading this book since last month.

8) My classmates have been solving the riddle for seven days.