. – We never know ________ he is.– They say he is a salesman.
--- I’m sorry I have broken your teapot. --- ______.
--- What do you think of Andrew? --- There are some things that are not easy to ______, and his coldness is one.
You can do it ______ you like; it really doesn’t matter.
On ______ the flight would be delayed, we made other arrangements.
Of the two possibilities, ______ is more likely than that.