—I hurt it while I ________ a model plane.
—I ________ for my English exam.
—Three buses went by without stopping while I___________ at the bus stop.
—Of course. You in the library at that time.
— I was doing my homework.
—Oh, I some cooking in the kitchen and didn't hear it.
—Oh, I some shopping at that time.
—Sorry, I ______the coronavirus vaccine (新冠疫苗)in the hospital at that time.
— Three buses went by without stopping while I ________ at the bus stop.
—Because I (wait) for a call from my best friend in Hong Kong.
—Oh, I (take) a bath then.
—No, I (watch) a football match.