In many countries, some scientistsare already _______ research in order to produce a cloned human baby.

_________ adoption since her son’s death, but her husband didn’t agree with her.

It’s convenient to own a car; however,I don’t think it’s good to drive one________you go,especiallyin places with a lot of traffic[ ]

The injured person was still ________ on the bed where he was ________.[ ]

I wonder __________.