—Alice promised me to come round to keep you company today.—But she ________. I’ve been alone all day.
The problem is _____ difficult for me _____ solve.
Peter had ______ his career in law to become a teacher.
It is known to us all that the People’s Republic of China ______ on October 1, 1949.
______jobs will be lost if the company closes down.
—Mike, please don’t make so much noise. —Pardon? —I ______ you not to make so much noise.