We already have ______ pencils, but we need two ______ pens.
| A．dozen of, dozen | B．dozens of, dozens |
| C．dozens of, dozen | D．dozens of, dozen of |
32．Misunderstandings_____from lack of social communication，unless properly，may lead to serious problems．
| A．arisen；handling | B．arising；handled | C．rising；handled | D．risen；handling |
30．They can’t afford to buy the latest equipment at present．_______，they keep trying new ways to improve efficiency．
| A．On the contrary | B．In contrast | C．Nevertheless | D．Furthermore |
29．The young man，who by thenadmission to university，decided to do some part-time jobs to gain more practical experience．
| A．gained | B．was gaining | C．has gained | D．had gained |
28．—Now some parents deny_______to their children，and have become their slaves．
—But this problem does not cause concern of the whole society．
| A．nothing | B．everything | C．something | D．Anything |
27．Don’t you think it essential that every resident of Nanjing___________spare no effort to make contributions to Nanjing 2014 Youth Olympic Games?
| A．should | B．will | C．shall | D．Would |