—Whatabouttheprotectionofthesenewmachines?—Let’skeepth...
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問題詳情:
— What about the protection of these new machines?
— Let’s keep the surface ________ dust by putting a cover over them.
from t from from from
【回答】
C
知識點:詞組 短語
題型:選擇題
標籤:
skeepth
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