1.I am in the middle of arranging the press conference.
2.I am in the middle of making a pie for dinner, then the telephone rang.
3.They are in the middle of having evening party when their parents come back suddenly.
1. I'm in the middle of coordinating the press conference.
2. I was in the middle of making a pie for dinner when the telephone rang.
3. When the parents came back suddenly, they were in the middle of a party .
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。 i am in the middle of preparing the pie, then the call is ringing
3. 父母突然返回时,他们正在开晚会。they are in the middle of party, they parents came back