1648] _____ you are happy, it doesn’t matter what you do.
[译文] 只要你快乐，你做什么都没关系。
A. As good as B. As soon as
C. As long as D. As well as
[答案及简析] C。 as long as 只要；as good as和…一样好.
1647] When he _____ with his sister, he suddenly ____ into tears.
[译文] 当他和他的妹妹争吵时，他突然大哭起来。
A. was arguing; burst B. argure; burst
C. had argued; was bursting D. was arguing; was burst
[答案及简析] A。 burst into tears 放声大哭。
1646] The boss went into the house, _____ the five boys _____ in the rain.
[译文] 老板走进房屋，留下五个小孩站在雨里。
A. left; stand B. leaving; standing
C. left; stand D. leaving; stand
[答案及简析] B。 现在分词短语表状态。
1645] The result of the final football match was 2 to 2, _____ the satisfaction both the teams.
[译文] 足球决赛的结果是2比2，两个队都满意。
A. with B. for
C. at D. to
[答案及简析] D。 to the satisfaction of 使….满意。
1644] When I was puzzled, I noticed some words on the board, which _____ "Turn left".
[译文] 当我不知所措的时候，我注意到木板上写着几个字：向左转。
A. talked B. read
C. spoke D. say
[答案及简析] B。 read 在这样的句子中应译成：上面写着。
1643] The boy was _____ eager to get a geography book.
[译文] 这男孩非常想得到一本地理书。
A. more B. too
C. much D. far
[答案及简析] B。 too eager to do sth. 非常想做某事。这里不是"太…以至于…"的结构，因为句中的形容词是表示褒义的词汇。
1642] We ______ a pleasant journey but for the rain.
[译文] 要不是下雨，我们会有一个愉快的旅行。
A. would have B. will have
C. had had D. would have had
[答案及简析] D。 but for 要不是，引导短语表示条件，等于if it had not been for the rain。
1641] They _____ the house but found nobody in it.
[译文] 他们搜查了房屋但没有发现一个人在里面。
A. have searched B. searched
C. searched for D. were in seach for
[答案及简析] B。 search 及物动词，表示搜查什么地方或人。
1640] She can’t help _____ the house because she is cooking the meal.
[译文] 她不能帮助打扫房子因为她在做饭。
A. cleaning B. to be cleaned
C. to clean D. being cleaned
[答案及简析] C。 can’t help doing sth.禁不住；can’t help to dosth.不能帮助做什么。
1639] They stood there with their eyes wide _____, _____ what was happening.
[译文] 他们站在那儿，睁大着双眼，注视着发生了什么事。
A. opened; looking at B. open; watching over
C. closed; looking at D. open; to look for
[答案及简析] B。 open 形容词，表示状态；closed没有形容词表示状态就用过去分词表示。