– It’s terribly cold today, isn’t it?– Yes. ________ yesterday.A. So it was B. So was it C. So it is
You know great changes _____________ in our school in the past ten years.
Paul doesn’t know _________ about his problems.
--Who _______ the Harry Potter series________ ? -- J.K.Rowling.
We know that about seventy percent _____ the earth _____ covered by water.
The question is _________ .