I wonder such a gentleman as he should ____ an error, though it is a simple and small one.

           , I lost heart in English learning, but my teacher often said to me, “Keep on studying hard , and you’ll succeed             .”

The old lady likes to keep things in the house, _____ throw them away, though many are useless. 

The new law would come into ___on the day it was passed. 

— What great changes have taken place in our city in the last few years!— Indeed, many high buildings have _______all over the city.