You’ve been here _____ a month. Don’t you miss your parents—Yes, I plan to come back home _____ a month.

My legs were ________ tired ________ I wanted to stop.

you have called her up had it been possible — Yes, but I busydoing my homework

caught in a traffic jam for over an hour, otherwise, I ________ you waiting for such a long time.

We should learn from various civilizations, ancient and modern, and benefits from them.