- he still in his office? ---No. He back home.A. Is; working; wentB. Has; worked; is

问题补充：

--- he still in his office?

---No. He back home.

A. Is; working; went

B. Has; worked; is going

C. Is; working; has gone

D. Did; work; is going

答案：

A. Is; working; went

B. Has; worked; is going

(答案→)C. Is; working; has gone

D. Did; work; is going

解析：句意：他仍在办公室工作吗？不，他已回家了。根据句意可知前一空该用现在进行时，后一空该用现在完成时态，所以选C。