问题补充：
—Why don’t you go out to play, Rose?
—I’m afraid I can’t. I have much homework .
A. do
B. does
C. doing
D. to do
答案：
A. do
B. does
C. doing
D. to do
解析：考查动词非谓语形式的用法。句意是“我有好多作业要做”。I have much homework是一个完整的句子。后面的挖空部分只能用作定语修饰homework，使用不定式to do。故选D。
