--- There must be a dozen pens in this house but I can never find one when I need one. --- Keep looking. _____ is sure to turn up.
It is five years ____ he lived here.In other words, he left here five years ago.
It was seven o;clock in the morning ____ he came back.It was really at seven o’clock ___ he came back from work this morning.
______She realized it was too late to go home.
—When did you first meet Tom?---On May 2, ____, the first day when I got this city.
Those who steal books in the library _____ not be allowed to borrow any again in the future.