Ishallneverforget________(meet)thelatePremierZhouduringhisinspectionofourfactory.
Night________(fall),wehurriedhome.
He refused to tell us whether he ________ (undertake) the job.
“Haveyoumovedintothenewflat?”“Notyet.Therooms________(paint).”
Thefloordoesnotlooksobadwhen________(sweep)clean.
he teacher told them since light ________ (travel) faster than sound,lightning ________ (appear) to go before thunder.