Hot metal ________ as it grows cooler.
A、contractsA
暂无解析
Thisdiploma(毕业文凭)________thatyouhavecompletedhighschool.
Somemoleculesarelargeenough________(see)undertheelectronicmicroscope.
Hardlyhadhefinishedhisspeech________theaudiencestartedcheering.
Iwonderifhecouldgetit________(do)beforetomorrow.
heteachertoldthemsincelight________(travel)fasterthansound,lightning________(appear)togobeforethunder.
