-Wouldn’t it be ___ wonderful world, if all nations live in ____ peace with one another?-What _____ pleasure to live in _______ world!
35. Do you know who ________ using water in this way?
34 He tried his best to solve the problem, _______ difficult it was.
33. The oil in the cooker ___ heavy smoke, which made us in tears and difficult to open our eyes .
32. ---I can’t see words on the blackboard clearly .---Why, your eyes need _____ .Perhaps you need ______ glasses .
31. Attention must be paid to ______ science and technology..