There was such a long queue for coffee at the interval that we ______ gave up [ ]

lice still haven’t found the lost child,but they’re doing all they .

Shall I inform him of the change of the schedule right now?— I’m afraid you _____.

Many firms give away small quantities of theirproductions as _______ so that people can try them before buying.

下列各句中，没有错别字的一项是（ ）