题目内容
(请给出正确答案)
[单选题]
The ridges are hidden by mist or cloud ____.
A.much time
B.from times to times
C.time to time
D.from time to time
答案
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B.from times to times
C.time to time
D.from time to time
第1题
A.peat bogs
B.rapid streams
C.small islands
D.high cliffs