15. —When Lily fainted, we could have turned to your father for help. —Yes, sending her to hospital _________ necessary.
I__________ you somewhere before, but your name has escaped me_________.
What worried the child most was _________ to visit his mother in the hospital.
—When__________ and visit our exhibition next month? — When_______, I will let you know.
Michael __________ here to see you and he____________ a note on your desk.
--How long ___________ each other before they__________ married? --For about a year.