题目

With a(an) ( ) of 20 students to help,we can finish the work on time.
Atotal Bntire Cwhole Dall
IT is the Internet ( ) makes all the people in the world live like a big family.
Awhich Bwhat Cthat Dwho
-It is ( ) that all the guests will get here by 8 o'clock tonight
-Don't be so ( ) ,Paul
Acertain sure Bcertain surely Csure sure Dsure certain
It is said in the book that Thomas Edison ( )[be] the world leading inventor for sixty years.答案是was,怎么回事?、

提问时间：2020-08-10

答案

1A a total of+名词短语 表示一个总量
2C 强调句基本句型：It's +被强调部分+that/who 从句,引导词只有这两种
3A 先排除B,因为be动词后加形容词；sure的主语一般是人,certain一般有it做形式主语,It's certain that...是固定句型
4was 陈述过去发生的客观事实用过去时态.