Having checked the doors were closed, and ___ all the lights were off, the boy opened the door to his bedroom.

It’s a common scene in the film Tangshan Earthquake that families cry helplessly over _____ is left of their homes.

The old man lived ______ in a small house, but he didn’t feel ______.

下列各组词语没有错别字的一项是

Though Professor Liu ____ in New York for seven years, he has never regretted moving back to Shanghai, his hometown