Only when you have obtained sufficient data ________ come to a sound conclusion.
A、canyouA
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Hefellasleepimmediatelylastnight;hemust________(be)verytired.
Onlywhenyouhaveobtainedsufficientdata________cometoasoundconclusion.
Wooddoesnotconductelectricity;________.
Ifound________toanswerallthequestionswithinthetimegiven.
Matteristhename________(give)toeverythingwhichhasweightandoccupiesspace.
