Xu Xia and her teammates are the U.S.A. next week.A. leaving for B. leave for C. leave D.

问题补充：

Xu Xia and her teammates are the U.S.A. next week.

A. leaving for B. leave for C. leave D. left

答案：

解析：句意：徐霞和她的同学下周将去美国。Leave for sp表示“动身去某地”，而本句中的next week表示的是将来的时间，只有A项是属于现在进行时表示将来；故选A。