Hotmetal________asitgrowscooler.
A、contractsTosucceedinascientificresearchproject________.
Night________(fall),wehurriedhome.
Matteristhename________(give)toeverythingwhichhasweightandoccupiesspace.
Onlywhenyouhaveobtainedsufficientdata________cometoasoundconclusion.
Thedirectorrecommendedthatshe________(study)moreEnglishbeforegoingabroad.
