Question

Please remain __________ until the plane has come to a complete stop.

A. to seat B. to be seated

C. seating       D. seated

Answer 1

D。

解析:

由于seat用作动词时总是及物的，所以它的后面必须要用宾语，或用被动语态或过去分词，据此可排除A和C。由于不定式to be seated表示将来意义，所以也不能选择。