27．It's impolite for us _______ in line when we get on a bus．

A．wait                    B．to wait                 C．cut                        D．to cut

26．--What a nice bike! How long _______ you _______ it?

--Just two weeks．

A．have，bought                                         B．did，buy

C．have，had                                                 D．are，having

25．--What about having a cup of tea?

-- _______!

A．Good idea                                               B．I want it

C．Help yourself                                            D．Me，too

24．At 9 a.m. on October 15，2003，______ Yang Liwei flew into space in the manned spaceship．

A．38 years old                                            B．38 year old

C．38-year-old                                               D．38-years-old

23．After school he didn't go home．_______ he went to the Internet cafe．

A．But                                                        B．Instead

C．While                                                       D．Instead of

22．What makes the baby _______?

A．stops crying                                            B．stopped to cry

C．stop cried                                                  D．stop crying

21．--I called you at seven yesterday evening，but there was no answer．

--Oh，I am sorry．I _______ dinner at my friend's home．

A．am having                                                     B．had

C．was having                                                D．have had

20．How old is his Chinese teacher?

A．About thirty．                   B．About forty．                    C．About fifty．

从每小题A、B、C、D中选出一个能填入句中空白处的最佳答案。

19．What subject is too difficult for Jack?

A．Math．                             B．Science．                          C．Chinese．

18．Did Jack learn Chinese before he came to China?

A．No，he didn't．                 B．Yes，he did．                   C．We don't know．