Question

【题目】We had to wait half an hour________ we had already booked a table.
A.since
B.although
C.until
D.before

Answer 1

【答案】B
【解析】A.since既然，自从；B. although虽然…… ，尽管……；C.until直到；D.before在……之前；句意虽然我们已经订了一张桌子，但我们还是不得不等上半个小时。根据句意，故选B。