--- I can’t go for a picnic with you because something urgent has _____.

   ---What a shame!

A. come up                        B. cleared up              C. stayed up                D. ended up

. — _______ .

— Drop in if you have time.

—Sure. Bye!

--They ________ out the problem, but failed.

    --What a shame ! I never thought it was going to happen like that.

    A. managed to work                   B. managed working

    C. sought working                     D. sought to work

下面短文中有10处语言错误。请在有错误的地方增加、删除或修改某个单词。
增加：在缺词处加一个漏字符号(^)，并在其下面写上该加的词。删除：把多余的词用斜线(＼)划掉。修改：在错的词下划一横线，并在该词下面写上修改后的词。
注意：1．每处错误及其修改均仅限一词；
2．只允许修改l0处，多者(从第11处起)不计分。
Dear teacher,
Let me tell you why I have got so many deductions (扣分) for the last four weeks. Sometimes I got up lately. In order not to be late for class, I did everything in hurry. So I often forgot to put all my roommates’ shoes under their bed. As a rule, we should do a general cleaning in Monday afternoon, but I don’t know. Of course I did not go back to the room to do some cleaning. What a shame! What’s the worse, nobody came to help me when I in trouble. I think they are too selfish.
By the way, many of us are always saying the dormitory administrator (寝管员) is too strict with us. As a matter of fact, I have never met such a cruel person. But maybe, she is right. I promise that I would do well than before in the future.

—Sorry, Ann. I’m afraid that I can’t go to the magic show by David Copper Field with you.

— _____ Who knows when he will be back here again?