二、单选填空(共15小题,15分,每小题1分)
21. No matter how busy he is, Tom makes ______ a rule to see his grandparents every weekend.
A this                         B that                        C it                             D him
22. Tom is ______ fantastic musician. I’m absolutely certain that his next concert will be ______ success.
A the , a                     B the , 不填               C a , a                        D a , 不填
23. The purpose of the article is to draw public attention ______ the traffic problem.
A to                           B on                           C in                            D for
24. –What do you think of your new ipad?
--Good. I can’t find a ______ one.
A worst                      B best                        C worse                     D better
25. Whenever you ______ a present, you’d better think about it from the receiver’s preference.
A bought                  B buy                         C will buy                  D have bought
26. You will never be successful _____ you are fully devoted to you work.
A because          B unless                    C if                             D when
27. I’ve ordered some pizza, so we _____ worry about cooking when we get home tired.
A can’t                    B may not          C needn’t         D dare not