Experiments of this kind __________ in both the U. S. and Europe well before the Second World War.
This kind of glasses made by experienced craftsmen _________ comfortably.
—You've agreed to go.So aren't you getting ready? —But I ______ that you would have me start at once.
My teacher asked me to copy _____ article _____ second time.
Every weekend, there is a meeting and our head teacher, with five of us, ____ it.
– Is everybody here? – Not yet… Look, there ____ the rest of our visitors!