1.Bob can`t find his pen in his pencil-box,so he uses a penc

1.Bob can`t find his pen in his pencil-box,so he uses a pencil to write i____________.
2.The moon shone brightly in t________ the window.
3.She didn`t h________ herself.She was all right.
4.(根据A句写B句）
A.-Who taught Lily to ride a bike?
-She taught herself.
B.Lily learned to ride a bike all _____ _____.