—It’s a long time________I saw you last.—Yes,and what a pity it is now that it will be a long time________we see each other again.
30.The problem lies in ______ the mist may become a thick fog , making the situation even worse.
29. Do you think ______ possible for her to work out the difficult problem all by herself?
28. There is no doubt ______ you will be successful in time as long as you study hard.
27. He often thinks of ______ he can do more for his country, so he is highly spoken of by the people throughout the country.
26. Word has come ______ the Chinese football team has failed again, _______ makes many football fans frustrated.