问题
选择题
Frank, with his two sisters, ________ London by train which ________at 8:30 next morning.
A．is leaving for; will leave
B．are leaving for; leaves
C．is leaving for; leaves
D．will leave for; will leave
答案
答案：C
考查主谓一致。With 连接连个主语时，取决于前者，故用is leaving for用进行时态表将来，第二空表示列车时刻表时，用一般现在时态表将来，故选C。