I knocked on the door several times but_______________ answered, so I left.

Reading provides me with fun and it also enables me ______ the world around me.

When we arrived in ________ used to be called the foggy capital，we found London completely changed.London is now one of the capital cities in the world with the finest air quality.

_____ that quite a lot of people were out of work.

While studying， fix yourmind on what is really important， or you willremembering nothing