Thedirectorrecommendedthatshe________(study)moreEnglishbeforegoingabroad.
更新时间:2024-11-24 03:15:49Howlong________they________(dig)theditch?
The floor does not look so bad when ________ (sweep) clean.
Somemoleculesarelargeenough________(see)undertheelectronicmicroscope.
Onlywhenyouhaveobtainedsufficientdata________cometoasoundconclusion.
Hotmetal________asitgrowscooler.
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