--- Shall we go for a drink at one o’clock this afternoon?--- ______. Will two o’clock be OK?
There were two teachers named John ________at our school, which made some of our students _____.
They always communicated with each other on the Internet, but they never met him _____________.
--The room is so dirty.____ we clean it? ---Of course.
.---Would you please save this seat for me? ----______.