It is rather that we still do not know how many species there are in the world today.

M B．offered C．rewarded D．received

end, Tom had just lost his job when, at theprecise moment, his girlfriend ______ up with him. She was rubbing salt intohis wound.

Hi, John. Are you still a smoker—-.It’s two years since I stopped smoking.

Never in my life ________ such a beautiful sunrise!