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，與…直接有關

　　46. Living in the western part of the country has its problems, _C_ obtaining fresh water is not the least. [the least 最高級]

　　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 最高級]

　　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 $30 million. [in the event of 萬一，如果]

　　A face B time C event D course

　　in the face of 面對; in the time of 在…時期; in the course of 在…期間。

　　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 + 動詞原形; would rather + 句子(用虛擬語氣，句子謂語動詞用一般過去時)

　　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引導則應改成：Although he likes her very much, …

　　50. The British constitution is _B_ a large extent a product of the historical events described above. [無論是在空格前還是后，如果出現了名詞extent要找介詞就著to]

　　A within B to C by D at

　　to a large extent 在很大程度上。