问题
选择题
—Where were you just now?
—I _____ to a student in my office when you called. [ ]
A. talk
B. talked
C. is talking
D. was talking
答案
答案：D
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—Where were you just now?
—I _____ to a student in my office when you called. [ ]
A. talk
B. talked
C. is talking
D. was talking
答案：D