no life has been found outside the earth, but while some scientists are activelysearching for living things in outer space, others firmly believe there ______

Would you take this along to the office for me—______________.

There were two boys in the lab,______did the experiment successfully.

She is tired her job, so she’s always a bad mood.

I was born in New Orleans，Louisiana，a city ________ name will create a picture of beautiful trees and green grass in our mind.