问题补充:
Mr. Black Shanghai in a few days. Do you know when the earliest plane on Sunday?
A. is leaving, takes off
B. leaves, takes off
C. is leaving, is taking off
D. leaves, is taking off
答案:
(答案→)A. is leaving, takes off
B. leaves, takes off
C. is leaving, is taking off
D. leaves, is taking off
解析:可联系答.案.网客服索取。