xuqiulin

1. 我正忙着协调安排记者招待会。i'm in the middle of arranging news conference
2. 我正忙着做正餐吃的馅饼，这时电话响了。
the phone is ring when I'm in the middle of cooking the pie,  
3. 父母突然返回时，他们正在开晚会。

SugerDaisy

1. I am in the middle of arranging the news conference.
2. I was in the middle of cooking pies when the telephone rang.
3. They were in the middle of meeting when their parents suddenly come back.

sancunren

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