A recent study has ________ an unexpected conclusion that the African elephant should be divided into two different species.
So far, several ships have been reported missing _______ the coast of Bermuda Island.
(2) We all regarded the poor old man ____sympathy.
We’ve talked a lot _______ films. How _____ television now?
In those days, we had no phones, so we have to keep in touch _____ writing often.
“When did you leave the farm?” “____ the end of last year.”