The floor does not look so bad when ________ (sweep) clean.
swept
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he teacher told them since light ________ (travel) faster than sound,lightning ________ (appear) to go before thunder.
Thedirectorrecommendedthatshe________(study)moreEnglishbeforegoingabroad.
I found ________ to answer all the questions within the time given.
Heaskedmewhethermybrother________(fly)toBeijing.
Themorewelookedatthepicture,________.
