单选题
— Tomorrow is a holiday! Why are you doing your homework?
—I am doing this exercise now so that I won't have ______ on Sunday.
【正确答案】
D
【答案解析】[解题指要] 该题测试to代替不定式,以避免重复的用法。to与want,wish,hope,like,hate, try,have(必须),ought,need,used(惯常),be able,be going(将要)等并用,形成不定式,省略前面动词不定式短语,只保留其符号to,以避免重复。如果选B、C两项,就成了“我有它(们),句意不通”。