--- It was not until she had arrived home _________ her appointment with the doctor.
The plane takes off at 6:00 p.m. So I have to arrive at the airport ________ 5:30 p.m. at the latest.A after B. since C. until D. by
--How long ________ as an assistant here?-- Ever since I finished middle school.
--Forgive me for hurting you by saying so.--________
They had ________ in keeping in touch with each other that they decided to move to the same city.
--Is this the office ________ your parents are working now?--No. They are working in the next one.