In front of ______ remained of my old house,I took some pictures,which called up my childhood.
-- Not knowing what style of iPad to choose, _______.
It seems that living green is ______ easy and cheap. A small step can be rewarded with long-term benefits.
What impressed me in Greece was that the oceans _______ the islands were deep blue and many cities lay on the bay.
Researches show that the taller you are, the more _______ you are to suffer back pain.
One way to ______ species under threat of extinction is to remove them to zoos and parks and feed them there.