题目内容
17．You______be tired after playing sports for a long time without a rest．（ ）| A． | must | B． | need | C． | can't |
分析 运动了这么长的时间没有休息之后，你一定很累了．
解答 答案：A．must一定，必须；need需要；can't不可能．根据after playing sports for a long time without a rest，可知运动很长时间后可推测一定很累，故选A．
点评 本题考查了情态动词的用法．解答时注意must的用法：一定，必须的意思，表示推测时具有很大的可能性．
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