I used to to school by bike, but now I am used to to school.

Do you believe that difficult situations or hard experiences _______ the best qualities of a man?—There is no doubt about that.

Li Mu picks _________ corn than _________.

I hope that the little ________ I have beenable to do does good to them all.

_____unusual music he is playing!— Yes, all of the students are losing themselves in it.