问题
选择题
Tom was disappointed that most of the guests _________ when he _________ at the party.
A．left; arrived
B．had left; arrived
C．left; had arrived
D．had left; had arrived
答案
答案：B
本题考查动词时态。句意：汤姆失望了，因为他到达晚会时，大部分客人已经走了。guests先“离开”，Tom后“到达”。