摘要： Most birds find it safe to sleep in the trees, but they have eggs or young chicks, they don’t use a nest. A. why B. how C. unless D. where
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Most birds find it safe to sleep in the trees, but ________they have eggs or young chicks, they don’t use a nest.
A.why B.how C.unless D.where
查看习题详情和答案>>Most birds find it safe to sleep in the trees, but ____ they have eggs or young chicks, they don’t use a nest.
A. why B. how C. unless D. where
查看习题详情和答案>>Most birds find it safe to sleep in the trees,but_______they have eggs or young chicks,they don’t use a nest.
A.why B.how
C.unless D.where
查看习题详情和答案>>