offered us a lift when he was leaving the office, but our work ______, we didn’t accept the offer.

My e-dictionary is nowhere to be found. Who ______have taken it—–Keep looking and you will find it. ________ youhave good luck!

I had meant to meet you at the airport this morningbut I was too busy for I_______ a report.

Attention, please. Sorry to tell you the flight has tobe ______because of the heavy snow.

The ______, I think, he drew from his simple experiment is not scientific．