Richard was called in by the police to answer questions _______ the disappearance of Thomas Ripley, whose relatives were so ______ his present situation.

.Mary has _________ 18-year-old daughter who has ________ gift for singing. 

Carbon dioxide ___ from burning fuels is the most common of the so-called greenhouse gases.

We must keep our room clean, for dirt and disease go______, you know.

—Victor certainly cares too much about himself.—Yes. He’s never interested in what         is doing.