Charles is believed_______ the floor yesterday; he is always helping others sile

题型：不详难度：来源：

Charles is believed_______ the floor yesterday; he is always helping others silently.

A．to sweep

B．to have swept

C．having swept

D．swept

答案

解析

考查非谓语动词。句意：相信查尔斯昨天已经打扫过地面了。他总是默默地帮助别人。Believe后用不带to的不定式，当变为被动语态时，要加上to表示具体的将要进行的动作，如果动作发生在谓语动词之前，则要用完成时态的不定式。结合语境可知打扫地板发生在相信之前，故选B.

举一反三

Don’t enter the office unless _______.

A．you have told to

B．told to

C．telling

D．you are told

题型：不详难度：| 查看答案

--- Why do you work so hard day and night?
--- my parents’ expectations.

A．To live up to	B．To meet the demand of
C．To make full use of	D．To put up with

题型：不详难度：| 查看答案

I didn’t mean ______ anything, but these apples looked so good I couldn’t resist ______ one.

A．to eat…trying	B．to eat…to trying
C．eating…to try	D．eating…to trying

题型：不详难度：| 查看答案

______ when to leave, I could only stay at home, _____ nothing.

A．Knowing not; done	B．Not knowing; doing
C．Having not known; done	D．Not having known; doing

题型：不详难度：| 查看答案

He told me about the news in a voice.

A．amazing; surprising	B．amazed; surprised
C．amazing; surprised	D．amazed; surprising

题型：不详难度：| 查看答案