________ global energy safety, all the countries have been called on to take joi

题型：不详难度：来源：

________ global energy safety, all the countries have been called on to take joint efforts ．

A．Having ensured	B．Ensuring
C．To ensure	D．To have ensured

答案

解析

不定式短语作目的状语，“为了确保……”。

举一反三

　　I’ve worked with children before, so I know what ______ in my new job.

A．expected

B．to expect

C．to be expecting

D．expects

题型：不详难度：| 查看答案

My classmates, Li Ming, was highly praised for ___ a good deed.

A．doing

B．have done

C．having done

D．being done

题型：不详难度：| 查看答案

--Excuse me, could you tell me ___ the nearest station? ----Sure.

A．where is

B．where is way to

C．where to go to

D．how to get to

题型：不详难度：| 查看答案

When I came home, I found the window open and something ___.

A．stolen

B．stealing

C．be stolen

D．to steal

题型：不详难度：| 查看答案

_____ their hats into the air, the fans of the winning team let out loud shouts of victory.

A．To throw

B．Thrown

C．Throwing

D．Being thrown

题型：不详难度：| 查看答案