retraining 再培训； take advantage 利用；
44. Everybody _A_ in the hall where they were welcomed by the secretary.
A assembled B accumulated C piled D joined
assembled 聚集； secretary 书记。
45. Putting in a new window will _B_ cutting away part of the roof.
A include B involve C contain D comprise
involve 引起，与…直接有关
46. Living in the western part of the country has its problems, _C_ obtaining fresh water is not the least. [the least 最高级]
A with which B for which C of which D which
42. Living in the central Australian desert has its problems, _C_ obtaining water is not the least. [the least 最高级]
A for which B to which C of which D in which
47. In the _C_ of the project not being a success, the investors stand to lose up to million. [in the event of 万一，如果]
A face B time C event D course
in the face of 面对； in the time of 在…时期； in the course of 在…期间。
48. The manager would rather his daughter _D_ in the same office.
A had not worked B not to work C does not work D did not work
would rather + 动词原形； would rather + 句子（用虚拟语气，句子谓语动词用一般过去时）
49. _D_, he does get annoyed with her sometimes.
A Although much he likes her B Much although he likes her
C As he likes her much D Much as he likes her
如果用although引导则应改成：Although he likes her very much, …
50. The British constitution is _B_ a large extent a product of the historical events described above. [无论是在空格前还是后，如果出现了名词extent要找介词就着to]
A within B to C by D at
to a large extent 在很大程度上。
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