One day I went out and ( 1 ) my key at home . When I came back I couldn't get in because my Mum was ( 2 ) for shopping . I had to ( 3 ) a window in order to get in , so I picked up a ( 4 ) .
1. a. placed b. left c. kept d. used
2. a. went out b. gone out c. out d. doing
3. a. buy b. clean c. borrow d. break
更新1:
4. a. hand b. key c. book d. stone
