__, Mark Twain became worldwide famous at once.
They desired that they_______ the right to vote.
The professor explained this theory so clearly that this phenomenon was easy enough ________.
—Mike, our team will play against the Rockets this weekend. I am sure we will win. —_________.
He has devoted himself __ mankind. to benefit B. benefiting C. to benefiting D. benefited
Robert is said ____ abroad, but I don’t know what country he studied in.