Question

3.(2015 内蒙古包头，32) We had to wait half an hour       we had already booked a table.

   A. or   B. once   C. although   D. as

Answer 1

3. C

3. C

句意:虽然我们已经预订了桌位，但还是不得不等了半个小时。 本题考査连词的用法。or或者;once —旦;although虽然;as当…… 时候。although表示让步关系，符合句意。故选C项。