Where was it ________ the road accident happened yesterday?
[A] when
[B] that
[C] which
[D] how
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[A] since
[B] which
[C] when
[D] with that
A.nothing B.anything C.something D.at
A. nothing
B. anything
C. something
D. at
The student from Shanghai thought about the time 25 years ago because it was when Nixon ________.
[A] died
[B] visited China
[C] became U. S. president
[D] started building the library in his name
也存在某种差异。要求你从四个选项中选择你认为最适合取代问号的一个。正确的答案应不仅使两套图形表现出最大的相似性,而且使第二套图形也表现出自己的特征。 【例题】