More and more attention has been drawn to the fact that many children are ________ in the countryside when their parents flood into the cities for jobs.

My morning ________ includes jogging in the park and reading newspapers over breakfast.

The lorries were lined up, ready to move________.

---I heard that you made a bicycle trip to the 2010 World Expo of Shanghai alone.---No. Actually, my friend Bob ________ me.

The keeper of the spring cleared away the leaves and branches, and wiped away the silt(淤泥) that would _______ have choked and polluted the fresh flow of water.