51.（ ）

(单选题)______ when she began to shout at the chairman. (单选题)He insisted on doing ______ good to others. (单选题)When Xie Tingfeng is out, he often wears dark glasses to avo (单选题)If I ______ you in the primary school ten years ago, I _____ (单选题)It is the first time that our Defense Minister ______ this p (单选题)She must have worked all night, for you see, she is with ___ (单选题)—Are you going to ______ basketball match tomorrow?—I’d like (单选题)In Spite of the women’s liberation movement, people are stil (单选题)In my eyes, Zhou Enlai’s morals ______ above criticism. (单选题)I hate it when she calls me at work — I’m always too busy to