单选题 —Mum, I've been studying English since 8 o'clock. ______ I go ont and play with Tom for a while?
—No, t'm afraid not. Besides, it's raining outside now.
A. Can't B. Wouldn't C. May not D. Won't

【正确答案】 A
【答案解析】[解析] 句意为：——妈妈，我从8点钟开始一直在学英语，我能出去和汤姆玩一会儿吗?——恐怕不行，而且外面正在下雨呢。A项表示能力，指“不能够，不能”； B项表示意愿，意为“不愿，不会”。通过分析，可以选出A项。