Was it through Mary, _____ was working at a high school, ____ you got to know Tom?

27．Don’t you think it essential that every resident of Nanjing___________spare no effort to make contributions to Nanjing 2014 Youth Olympic Games?

the sun was not yet up, many people were already taking exercise in the square.

Is your friend British or American— __________. She is Canadian.

What do you think of my suggestion?— SorryWhat’s that? I ____ about something else