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?、