题目内容
7．-Susan，would you like to go shopping with us this afternoon？-I'd love to，but I ________study for a test．（ ）
| A． | may | B． | have to | C． | can | D． | has to |
分析 --Susan，今天下午你愿意和我们去购物吗？-我愿意去，但我必须为考试学习．
解答 答案：B．考查情态动词．句意：-Susan，今天下午你愿意和我们去购物吗？-我愿意去，但我必须为考试学习．May可以；have to必须；Can能够；has to必须．根据题干I'd love to，but I ________study for a test．可知主语是I，所以用have to，强掉我必须为考试学习．故选B．
点评 了解各个选项的含义，根据具体内容作答．
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