Thosewho’dliketovisittheexhibition________(sign)yournameshere.
ComradeLi________beinBeijingbecauseIsawhimintownonlyafewminutesago.
Wooddoesnotconductelectricity;________.
Hefellasleepimmediatelylastnight;hemust________(be)verytired.
Abeamoflightwillnotbendroundcornersunless________(make)todosowiththehelpofareflectingdevice
Hotmetal________asitgrowscooler.