The____of the Itaipu Dam took 30 000 people seven years.
He walked up and down the room for half an hour, _______ behind him.
Being in a foreign country, _______.
After seeing the play, ______.
. We looked forward, only ________ a narrow path ______ to the top of the mountain.
Jane is looking forward to _____ from me. Remember ______ my letter on your way home.