.31.All parents are willing to risk ________ their lives to save ________ of their children when a disaster is approaching.
The way the guests ___ in the hotel influenced their evaluation of the service.
A good friend of mine from I was born showed up at my home just before I left for Beijing.
—Ann is in hospital. — Oh, really? I __ __ know. I __ __ go and visit her.
When he the door, he found his keys were nowhere.
Every evening after dinner, if not from work, I will spend some time walking my dog.