lee1900

1. 我正忙着协调安排记者招待会。 i am in the middle of arranging the news conference
2. 我正忙着做正餐吃的馅饼，这时电话响了。 When I am in the middle of preparing the pie, the call is ring
3. 父母突然返回时，他们正在开晚会。they are in the middle of party, When they parents came back