----Mr. Johnson, would you have some more ice-cream?----No, thanks. It’s very good, but I have to _____ my weight, you know.
That was the first time I ______ there and I was impressed by the friendly people very much.
Smoking too much may ______ lung cancer and cause other diseases.
Mary felt sad over the loss of photos she had shot in Australia, ______ that was a memory she especially treasured.
With the guide ______ the way, we finally got to the village which we were looking for.
Perseverance is a kind of quality, and that is ______ it takes to do everything well.