Did Jack come back early last night? —YesIt was not yet eight o’clock ______ he arrived home[ ]

The time is not far away ________ modern communications will become widespread in China’s vast countryside.

Only then ________how much damage had been caused.

Nancy, can I take a look at the note you took for last period, please?— I’m sorry, I __________ something else thenI’ll make it up right away

. Did you write a report _______ pandas________ danger for the club yesterday evening