24. It is _____ that my nephew is really fond of classic music, which he has been exposed to (熏陶)for years.
29.It will lead to very serious result if this matter was ______ unsolved.
28.I didn’t enjoy the party very much. I knew ______ nobody there.
27.After the adventure, the children returned home, ______.
26.— Do you have any idea what Paul does all day? — As I know, he spends at least as much time playing as he ______.
25.The peace talks between the two countries have ______. No agreement was reached.