_________ money has been spent in building the modern library, where we can read books in our spare time.
. --- Shall we go shopping together this afternoon? --- _______. I will be very busy then.
. ________ the absence of any further evidence the police were unable to solve the murder.
. . The chair looks rather hard, but believe it or not, it is very comfortable _____.
. It was _____ his mother came in _____ to prepare his lessons.
. _______ has already been pointed out, grammar is not a set of dead rules.