It’s a difficult skill to master, but ______, it will benefit you for the rest of your life.
We're leaving at six o'clock ,and hope_________ most of the journey by lunch time.
I__________ you somewhere before, but your name has escaped me_________.
What worried the child most was _________ to visit his mother in the hospital.
Michael __________ here to see you and he____________ a note on your desk.
--How long ___________ each other before they__________ married? --For about a year.