28．He spent much of the evening with Robert Green,____he had hardly seen in the thirty years since they had worked together at CBS.

26．The researehers delermine what type of plants the virus can infect(感染) and____insects can carry the virus.

26. There was no doubt ____ it was in the supermarket _____ I lost my wallet yesterday.

23.— It’s a long time _____ I saw you last.
— Yes, and what a pity! It will be a long time ____ we see each other again.

29. —How do you think I should receive the reporter?
—______ you feel about him, try to be polite.

14．It is not who is right but what is right _______ is important.

9．_____ makes this shop different is that it offers more personal services.

_____ I’m willing to help, I do not have much time available．

Always read the label ______ you wash your clothes．

33.A reward of 1,000 dollars will be given ________ can find the  lost child.