请详解
Afterahardharddayinthelaboratory,shegoeshome,____sheplayswithhertoys.
A.HereB.ThereC.SoD.Then
Scientistshopetomoreaboutpeoplebystudyingapes.
A.observeB.discoverC.gainD.learn
Despiteherillness,shehadlost____herenthusiasmforlife.
A.notanyoneB.noneC.nothingD.notall
It’swritteninthebookthatThomasEdison____theworld’sleadinginventionforoversixtyyears.
A.wouldbeB.hasbeenC.hadbeenD.was