7．This is the third time he ______his handbag in the car．Old people _____ be forgettable．（　�。�
A．has left； canB．had left； mustC．left； mayD．was left； will

分析 這是他第三次把手提包落在車里，老人可能會很健忘．

解答 答案：A
解析：首先根據(jù)This/It is the first/second time that sb have/has done sth"這是某人第一/二次做某事"可知B、C、D選項可以直接全部排除，只剩下A選項．A選項中的can在肯定句中表"可能性"時是表示"理論上的可能性"（從理論上講，人老了記憶力自然就會下降，故而容易健忘），而不是表示具體某事發(fā)生的可能性，表示這樣的意思時要用could，may 或might．

點評 本題考查情態(tài)動詞，做此類題目時一定要先分析各個選項的含義及其用法再結(jié)合句意選出正確答案．

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