is not until everyone is seated the lesson will begin. A.It;that B.That;when C.T

_____ is not until everyone is seated ______the lesson will begin.

A.It;that            B.That;when         C.This;that         D.It;when

试题答案

A

本题考查强调句型结构。被强调的部分为时间状语从句，无论被强调的内容是什么，都用that引导。