Hot metal ________ as it grows cooler.
A、contractsA
暂无解析
Hardlyhadhefinishedhisspeech________theaudiencestartedcheering.
Ifound________toanswerallthequestionswithinthetimegiven.
Ishallneverforget________(meet)thelatePremierZhouduringhisinspectionofourfactory.
heteachertoldthemsincelight________(travel)fasterthansound,lightning________(appear)togobeforethunder.
Tosucceedinascientificresearchproject________.
