--- Can I help you, sir?---I’m afraid you can’t. I have my students’ papers________.
Keep up good state of mind even if you _____ fail plenty of times.
I can’t remember when exactly the Robinsons left _____city ,I only remember it was ______ Monday. 。
Some people ________ not have plans yet for New Year’s Eve, but others know exactly what they will be doing.
His conclusion, ______ on careful research, was acceptable.
It was __________________ back home from work.