短文改错.（一共十处,一行一处.）

短文改错.（一共十处,一行一处.）
I bought a clock in a shop on last Sunday 1.____________
afternoon. This morning, however, I found that it didn't worked. 2._________
So I went back the shop with it. The shop assistant asked me 3.___________
whether I had not followed（按照）the instructions（说明）and 4.__________
used it in the right way. I told him I konw how to use. 5.____________
After he hears this, he tried it and also found that 6.__________
there was anything wrong with the clock. Then I wanted 7.___________
him to tack it back and gave the money back to me, 8.__________
and he refused. He asked me to change it for another 9.__________
one. Finally I have got a new clock and it works wll now. 10.__________