—Did Alan enjoy seeing his old friends yesterday? —Yes, he did. He ________ his old friends for a long time.
Please leave your phone number ______ we can get in touch with you in case of emergency.
They demanded that the books ______ to the school library right away.
The trade union intended to call on the workers to go on strike ______ the government’s limitation on exports.
By the time you come back, your aunt ______ for Nanjing to attend a meeting.
______ frightened us ______ a tiger turned up suddenly in front of us.