Question

Shortly after we ________, a waiter came over to our table with a smile.

1. A.
   seated
2. B.
   were seated
3. C.
   sat ourselves
4. D.
   took places

Answer 1

B
seat是不及物动词，表示“坐下”，应用be seated或seat oneself，A项加上ourselves，C项sat改为seated；D项应为took our places就都可以了。