Question

．How long is it ______ we last spent the holiday in the country together? A．until B．before

．How long is it ______ we last spent the holiday in the country together? A．until B．before C．since D．that

Answer 1

C

考查时间状语从句。Until直到；before在......之前；since 自从；that不能引导时间状语从句。句意：自从我们上次一起在乡村度假，已经多长时间了？Since+一般过去时态的句子，主句用一般现在时态或现在完成时态。所以选C。