题目内容
4. We had to wait an hour we had already booked a table.
A. since B. although
C. until D. before
4. B
4. B解析：although引导让步状语从句，意为“虽然”。句意：我们虽然订了座 位，但是不得不等一个小时。
since自 从;until直到;before在 之前。
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题目内容
4. We had to wait an hour we had already booked a table.
A. since B. although
C. until D. before
4. B解析：although引导让步状语从句，意为“虽然”。句意：我们虽然订了座 位，但是不得不等一个小时。
since自 从;until直到;before在 之前。