Wake up, Lily. It’s time to _________, or you’ll be late for school.

If nobody breaks traffic rules and everyone is careful enough, most accidents can be .

What happened to Mike? —He had a stomachache. He began to work _______ having breakfast this morning.[ ]

The soft music sounds ________. We are all listening _________.

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