. Will you please keep quiet now? You shouldn’t talk until ________ to.A．askingB

题型：不详难度：来源：

. Will you please keep quiet now? You shouldn’t talk until ________ to.

A．asking

B．having asked

C．to ask

D．asked

答案

解析

考查状语从句的省略。句意：请你现在保持安静好吗，你不应该说话直到你要求被说。完整形式为：You shouldn’t talk until you are asked to.故选D。

举一反三

Only when I made it to the train station _______ that I had left my ticket at home.

A．have I realized

B．did I realize

C．had I realized

D．would I realize

题型：不详难度：| 查看答案

Doctor have said that as many as 50% of patients don’t take medicine _______.

A．like directed	B．to be directed
C．as directed	D．so that directed

题型：不详难度：| 查看答案

________ entered the classroom _________ the bell rang.

A．We hardly had, before	B．Hardly had we, when
C．Hardly had we, than	D．Hardly did we, when

题型：不详难度：| 查看答案

Only by practising constantly__________ greater progress.

A．we can make	B．then we will make
C．can we make	D．we must make

题型：不详难度：| 查看答案

—My sister took a photo with Jay Chou last year.
—______.

A．So had I

B．So I had

C．So did I

D．So I did

题型：不详难度：| 查看答案