Faced with a bill of $20,000, ___________________.
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.
18. _______ I can see, there is only one possible way to keep away from the danger.
17. ________ the grandparents love the children, they are strict with them.