用方框中所给词语的适当形式填空，使短文正确、通顺、连贯(每词限用一次)。

　　The mobile phone is a useful thing, but maybe I don't know 　　1　　 to use it．Sometimes it makes things difficult for me．

　　One day I wanted to see my friend nearby．I could 　　2　　 at his house in five minutes, but I looked at my mobile phone and thought 　　3　　 would be better to ring him up(打电话给他)．I 　　4　　 him for the first time, but the line was busy．Five minutes later, there was an answer, but it was the wrong number．Then I tried 　　5　　 and this time I got an answer from him．

　　I asked him if he was at home in the afternoon．And he said－at 　　6　　 I thought he said－he would be at home all afternoon．So I went to his house, but then I found 　　7　　 in．I called him for the fourth time．This time I got so angry that I 　　8　　, "You are not at home? But you just told me over the telephone that you would be at home all afternoon!"

　　Here 　　9　　 his answer, "No, I said：'I will NOT be at home all afternoon．'"

　　I went back to my room, sat down in front of the mobile phone and looked at it．What 　　10　　 could I do? Nothing!