_ human beings use it in a wrong way, like we did with nuclear technology, the advancement of science and technology has never led to decline of human development.

It’s difficult to live in a foreign country, if you can’t speak foreign languages.

He asked me _______ I could sing the song “My Heart will Go On.”

下列各句中，没有错别字的一项是（ ）

ou tell me what time the flight to Detroitleaves—I’m sorry, but it _______________.