—Do you know why people set off fireworks ? —Well, in ancient China, people set off fireworks on New Year’s EVE that the loud noise could drive away bad spirits .
In the last two years the workers______ many tall building.
_____ number of the students is 4,0000 , much more than last year.
---Tom had better stay at home, _____ he? ----Yes, but he’d better ____ turn the TV on.
This is the first book _______ my cousin bought me.
He is ______ that he does everything very well.