The president was so absorbed in his work that not a sound _____.
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.
The loss has not yet been ______ accurately, but it is believed to be well beyond a hundred million dollars.