30.Mr.Snuth advised us to________a written agreement even it was just a small deal.
_______ 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
We offered these students a summer course , aimed _____ improving their spoken English.