第二部分：英语知识运用（共两节，满分 35 分）
第一节：单项选择（共15 小题；每小题1分，满分15分）
21．What _______ pity that you must leave now! It is such _______ great fun to have dinner with you．
A． a; a B． a; the C． /; a D． a; /
22．——What ___ I wear for the party this evening, darling?
——It's a formal dinner．
A．shall B．can C．may D．must
23．You had better book rooms at the hotel in advance _____you should find no room on your arrival.
A. so that B. even if C. in case D. now that
24．—Larry, I will call you at 6 o’clock tomorrow morning.
—Thanks, Mum. But it’s too early. I _____then.
A. am sleeping B. am to sleep
