1、【题目】The floor does not look so bad when ________ (sweep) clean. 

答案：

swept

解析：

暂无解析

1、【题目】Thosewho’dliketovisittheexhibition________(sign)yournameshere.

答案：

解析：

1、【题目】Matteristhename________(give)toeverythingwhichhasweightandoccupiesspace.

答案：

解析：

1、【题目】Herefusedtotelluswhetherhe________(undertake)thejob.

答案：

解析：

1、【题目】He refused to tell us whether he ________ (undertake) the job.

答案：

would undertake

解析：

暂无解析

1、【题目】Night________(fall),wehurriedhome.

答案：

解析：

1、【题目】________(catch)intherain,hewaswettotheskin.

答案：

解析：

1、【题目】Abeamoflightwillnotbendroundcornersunless________(make)todosowiththehelpofareflectingdevice

答案：

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

1、【题目】Ishallneverforget________(meet)thelatePremierZhouduringhisinspectionofourfactory.

答案：

解析：

1、【题目】The director recommended that she ________ (study) more English before going abroad.

答案：

study

解析：

暂无解析

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】heteachertoldthemsincelight________(travel)fasterthansound,lightning________(appear)togobeforethunder.

答案：

解析：