题目内容
15．-Dad，why should I stop playing computer games？-For your eyes，my boy．I'm afraid you ________．（ ）
| A． | can | B． | must | C． | may | D． | could |
分析 --爸爸，为什么我必须停止玩电脑游戏？
--为了你的眼睛，我的孩子，恐怕你必须得停止了．
解答 答案：B．
must必须，一定；could，能，可能；can的过去式；can 能，能够；may可以，可能．根据For your eyes，my boy，可知为了你的眼睛，所以你必须得停止了，must必须，一定．故选B．
点评 本题考查了情态动词的用法．解答时注意理解句意以及所给选项的意思并作出正确选择．
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