--- Marry is in hospital. --- Oh, really? I _______ know. I _________ go and see her.
23. In some countries, _______ are called “public schools” are not owned by the state.
22. “How long do you suppose it is _______ he left for Japan?” “No more than half a month.”
21. Mr Zhang is mild in character. He never shouts ____ he is very angry.
20. John shut everybody out of the kitchen _______ he could prepare his grand surprise for the party.
19. _______ rich one may be there is always something one wants.