Ishallneverforget________(meet)thelatePremierZhouduringhisinspectionofourfactory.
ComradeLi________beinBeijingbecauseIsawhimintownonlyafewminutesago.
Hotmetal________asitgrowscooler.
He________methathedecidedtoleaveonMonday.
heteachertoldthemsincelight________(travel)fasterthansound,lightning________(appear)togobeforethunder.
Somemoleculesarelargeenough________(see)undertheelectronicmicroscope.