--- Are you satisfied with what he did? --- No. It couldn’t have been ______.
---Where’s Mabel? ---She _____ ping pong behind the teaching building.
Quite a few tall buildings _______ the last two years.
Man-made-satellites______ into space by many countries.
I _______ all the words on the black board. May I go home now? copy B. will coup C. copied D. have copied
Nobody knew _______ a living in that country.