主讲教师：张志强北京市英语特级教师
题一：
—I’m so sorry. But I _________ my homework.
A. had done B. was doing C. would do D. am doing
The water supply has been cut off temporarily because the workers _______ one of the main pipes.
A. had repaired B. have repaired C. repaired D. are repairing
题三：
I ________ to visit you later that day, but I had to phone and cancel.
A. come B. came C. am coming D. was coming
We ________ very early so we packed the night before.
A. leave B. had left C. were leaving D. have left
题五：
