At last, we found ourselves at the foot of a hill with trees providing shade and      ________  down to eat our picnic lunch.

The flooding      the bridge, so we can’t walk across it forever.

 When I got on the bus，I ________ I had left my wallet at home.(2011·山东)

On hearing the news of the road accidents, his face ________ pale.

—Have you ________ him to keep good hours?  —Yes, I have. But he doesn’t listen to me.