题目内容
(请给出正确答案)
[单选题]
When boundaries between countries are not clearly (), there is trouble.
A.defined
B. define
C. defend
D. defended
答案
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A.defined
B. define
C. defend
D. defended
第1题
A.perspective and descriptive
B.synchronic and diachronic
C.speech and writing
D.langue and parole
第2题
A.when crossing the street
B.when the street crossing
C.as he crossing the street
D.as he acrossed the street
第6题
A.In a week
B.It must be busy
C.It is hard
D.It will last three hours