–Shanghai is the city ______ the 2010 world Expo is held. --So it is a city____ most of us want to vist this summer.
None of the children watch it_________ .
Shanghai is larger than________ city in Gansu.
一What are you going to do this weekend? 一Well,we’ll clean up the city parks _______ it rains .
---You’ve chatted for nearly two hours. ---Yeah. We're talking about the things_________ happened yesterday.
We should read more good books because they can ______our eyes.