23．When I hurried to school，I realized that I ________ my English book at home．

A．forgot                 B．had forgotten       C．left                   D．had left

22．Don't worry about the coming exam．I think the more ________ you are，________ mistakes you'll make．

A．careful；the less                                 B．carefully；the fewer

C．carefully；the least                                D．careful；the fewer

21．--Listen! Is professor giving a speech in class?

--No，it ________ be him．He has gone to France．

A．may not               B．mustn't                C．needn't                 D．can't

20．If you can't get to sleep，then get up and try to do something ________ lying in bed．

A．and                     B．or                        C．instead of              D．because of

19．--What's the matter?

--I am having trouble ________ who has taken my book．

A．finding                 B．looking for           C．finding out           D．looking up

18．This week，the weather ________ to change every day：one day is hot，the next is cold．

A．seems                  B．looks                    C．sounds                   D．feels

17．This is ________ bedroom．The twin sisters like it very much．

A．Anne and Jane                                          B．Anne and Jane's

C．Anne's and Jane                                         D．Anne's and Jane's

16．This is ________ song I've told you about．Isn't it ________ beautiful one?

A．me；a                  B．the；the                C．a；an                    D．a；the

15．How long has she kept the watch?

A．40 days．                        B．Half a week．                  C．Half a month．

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。

14．What color is the watch?

A．Yellow．                     B．Silver．                   C．Black．