Do you know the man is running along the street?–Yes.He is our math teacher.

His son has poor eyesight because he plays _______ computer games.

Shanghai is the city ______ the 2010 world Expo is held. –So it is a city____ most of us want to vist this summer.

What ______ fruit do you like? —Bananas. [ ]

__________ When does your mother go shopping?—Usually_________ Sunday mornings.[ ]