首先在这里先说明一下情况,因为我的错题是考试的历年真题来的.同时这次的考试对我来说很重要,希望各位前辈能够帮助我,谨慎作答,因为我会完全相信你们的答案的!（题目比较多,如果越详细,解释越明白.

首先在这里先说明一下情况,因为我的错题是考试的历年真题来的.同时这次的考试对我来说很重要,希望各位前辈能够帮助我,谨慎作答,因为我会完全相信你们的答案的!（题目比较多,如果越详细,解释越明白.
42.In order to make ____ possible for men go on living when the present energy resources are used up,scientists are trying to find a solution ____ the energy problem.
A.it; about
B.that; of
C.it; to
D.this; in
--我选了D,
43.The student who could not answer the question sat down with his eyes ____ at the desk.
A.staring
B.stare
C.to stare
D.stared
--我选了D,
49.I was just about to leave the house ____ the phone rang.
A.while
B.when
C.as soon as
D.each time
--我选了C,