— Why didn’t they complete the task in time?— Because it was not until late afternoon _____ they began to solve the major problem.
In those days, we had no phones, so we have to keep in touch _____ writing often.
Don’t be angry _______ me for not having written. I was really too busy.
“When did you leave the farm?” “____ the end of last year.”
“How long will you work on the farm?” “____ the end of next year.”