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10春学期《大学英语(四)》在线作业一2 i4 U7 G0 T. i- i1 F- |% c
试卷总分:100 测试时间:--
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一、单选题(共 20 道试题,共 100 分。)V
' U( e% C1 {# |& j$ E( J 1. 17. We have not seen our next-door neighbors for weeks. They __D____ somewhere for holiday.
6 {) _4 N. e7 M' ?& d0 Z# DA. should have gone
j" A$ B; c: {$ {1 W8 w$ JB. need have gone% b8 [/ n& ]& d) x2 p# N
C. ought to have gone
1 Y0 d; }) L3 ]D. must have gone* O3 ]5 {: c# G, f# a! M3 r
满分:5 分 |
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