So difficult it to work out the problem that I decided to ask Tom for advice.A．I did findB．did I findC．I have foundD．have I found 题目和参考答案——青夏教育精英家教网—

题目内容

So difficult ___it to work out the problem that I decided to ask Tom for advice.

A．I did find

B．did I find

C．I have found

D．have I found

句意：发现解决这个问题如此困难，所以我答应向汤姆咨询一下。So位于句首，应使用部分倒装。另外本句用过去时态。

练习册系列答案

B．has been done so much?

C．so much has been done　?

D．has so much been done?

Not until about 2000 BC________________________done.

A．were known of the oldest paintings	B．the oldest of known paintings were
C．the oldest known were painting	D．were the oldest known paintings

_______,but it is also a great way to lower the number of greenhouse gases in the air.

A．Not only a fun thing is it to do	B．Not only a fun thing to do it is
C．Not only it is a fun thing to do	D．Not only is it a fun thing to do

Only after the plane had taken off _________ that he missed his parents so much.

Never before______ so highly successful in his attempts to forecast the weather accurately on a small scale．

—— Aren’t you be chairman?
—— No, and I ＿＿＿＿＿.

Not until yesterday ______ anything about the project that will be completed soon.

We will have a meeting next week, but we don’t know ＿＿＿＿＿.

试题分类