.Professor Zhang gave all the textbooks to all the pupils, except _____ who had already taken them.
32. The traffic problems we were looking forward to seeing ______ should have attracted the government’s attention.
31. The decision ______ Internet addiction(成瘾)as a mental disorder has caused much debate.
30. As we watched the panda, we stood still, ______ to one another.
29. Contrast may make something appear more beautiful than it is when ______ alone.
28. At a rough look, the area of the city is about ______ the old one.