1、【题目】Herefusedtotelluswhetherhe________(undertake)thejob.
答案：
解析：
1、【题目】Thosewho’dliketovisittheexhibition________(sign)yournameshere.
答案：
解析：
1、【题目】heteachertoldthemsincelight________(travel)fasterthansound,lightning________(appear)togobeforethunder.
答案：
解析：
1、【题目】Night________(fall),wehurriedhome.
答案：
解析：
1、【题目】I wonder if he could get it ________ (do) before tomorrow.
答案：
done
解析：
暂无解析
1、【题目】he teacher told them since light ________ (travel) faster than sound,lightning ________ (appear) to go before thunder.
答案：
travels, appears
解析：
暂无解析
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