问题
选择题
Mr. Black________ Shanghai in a few days. Do you know when the earliest plane ________on Sunday?
A．leaves for；takes off
B．is leaving for；takes off
C．is leaving for；is taking off
D．leaves for；is taking off
答案
答案：B
答案 B [句意：布莱克先生几天后要去上海，你知道周日最早的飞机何时起飞吗？第一空用is leaving for，现在进行时在此表示将要发生的动作；第二空用takes off，一般现在时在此表示按计划、时刻表进行的动作。]