I was deeply impressed ________ the speech by the mayor of Shanghai before the final voting for EXPO 2010

from endless homework on weekends, thestudents now find their own activities, such as taking a ride together to watchthe sunrise.

There are some warnings in some countries ______ over exploitation of underground water has caused the decline of wetland and increase of desertification.

No ________ what you say, _______exists in three states.

1–__do you go to theEnglish club–Once a week.