2. 外语
  3. _____the ability of birds to move through the air using wings and feathers.

_____the ability of birds to move through the air using wings and feathers.

admin2019-07-01  26
问题 _____the ability of birds to move through the air using wings and feathers.
选项 A、Flight
B、It is flight
C、As if flight
D、Flight is
答案D
解析 The sentence needs a subject and a verb: Flight is.
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托福（TOEFL）

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