The old man often looked back on the past days ________ he worked hard to make a living.
---I fell off my bicycle and broke my leg yesterday.---Is that ____ you drank too much?
_______ no buses , we have to walk home.
_______ to the left , and you will find the post office.
_______ many times , he still couldn’t understand it.
All their attempts to rescue the child from the burning building were ______.He dies soon afterwards. A.in place B.in return C.in vain D, for