英语强调句选择题～1.preciselytriggeredoffyesterday'sriotisstillunclear.A.WhatB.How2.ItatChristmasthatJohngaveMaryahandbag.A.mayhavebeenB.maybeC.hasbeenD.mayhasbeen选哪个?为什么是have

Question

英语强调句选择题～
1._____precisely triggered off yesterday's riot is still unclear.
A. What B. How
2.It ___ at Christmas that John gave Mary a handbag.
A. may have been B. maybe C. has been D. may has been
选哪个?为什么是have或者has?
3. I was driving north through Vermont ____ I noticed a young man holding up a sigh reading "Boston".
A.when B.where
4. The rain was so heavy ____our picnic impossible.
A. to make B. as to make C. making D. in order to make
应该选哪个?我觉得应该选c,对么?
5. ______ often, people have wrong ideas about other countries because they have never known natives of the countries personally.
A. All B. All but C. All too D. So
应该选哪个?为什么?
6.The effect on our blood chemistry is ____ that it products physical changes in our entire body.
A. such B. so
选这两个有什么区别么?应该选哪个?
谢谢解答～

Answer 1

1、what 引起主语从句
2、A may为情态动词,后面用动词原形
3、A 句意：当我开车向北穿过“vermont”的时候,我注意到一个年轻男人正向上举着一个牌子,上面写着"boston"
4、B so...as to do sth.如此.以至于.
6、A such是代词,可以放在be动词后面作表语,而so为副词,只能修饰形容词或副词.