----- Have you ever visited the 2010 Shanghai World Expo? -----Yes.When I was in China , I ______ it twice.
All of us were so excited at the news ______ we would be sent abroad to study for two years ______ we jumped with joy.
The hotel is going to employ an assistant with ______ knowledge of French and ______ experience of management.
When ______, the new railway will run for 250 miles.
It was really noisy in the workshop. Not until ______ at the top of my voice ______ to look at me.
______ the warning message, more visitors might have been trapped in the flood.