用所给单词的适当形式填空，使句子意思完整，正确。

用所给单词的适当形式填空，使句子意思完整，正确。
小题1:I’m very grateful for Mr. Johnson’s help with my job, so I will thank him __________ (personal).
小题2:I must __________ (apology) for not letting you know the plan ahead of time.
小题3:The __________ (perform) of the street artist was so great that it attracted the attention of all passers-by.
小题4:He is looking forward to __________ (admire) the classic music by Beethoven at the concert.
小题5:_________ (confident) is the first step to success.
小题6:Don’t worry. The problem has been __________ (solve).
小题7:Then the question __________ (arise) at the meeting, but no one knew how to answer it.