He ___ work in Hangzhou, did he?
—Tom came to work last Friday ,but no one has seen him since. — he have had an accident ?
—I telephoned him twice and I couldn’t get through to his home. —I think the line might have been out of order, ________?
—It cost me 30 yuan to get here. —Well, it was crazy of you to take a taxi _______ you could come by bus as well.
—Will you go shopping now? —Not until I ________ my experiment.
Every child is _____ to it parents.