问题补充：
—Wherethe twin , Do you know? —Jurong.
A. do; from
B. does; from
C. is; from
D. do; come from
答案：
A. do; from
B. does; from
(答案→)C. is; from
D. do; come from
解析：句意：这个双胞胎来自哪里，你知道吗？句容。Be from…来自哪里，相当于come from.如果句中有come from，疑问句中用助动词do，例如Where are you from?=Where do you come from?题中主语是the twin是单数，用is，故选C
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