Question

_____ is no doubt ______ you have to remain seated and fasten your seatbelt before the plane lands.

A．There; whether

B．It; that

C．There; that

D．It; whether

Answer 1

C

试题分析：句意：毫无疑问，在飞机着陆前，你要坐着，系紧安全带。这里使用了固定句型：It is no doubt that…“毫无疑问…”，that连接的是同位语从句，如果是There is doubt后面用whether连接宾语从句，所以选C。