28. I don’t think you’ve quite___the seriousness of the situation. You seem to know nothing about it.
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.