- does he clean the classroom? - a week.A. How long, SecondB. How often, TwiceC.When, Two
He hopes his son _________ a doctor in the future.
The book is so boring. I can’t find _______________ in it.
Betty writes ___________ than ___________ student in her classroom.
I can’t understand the story correctly _________ the new words in it.
--Is that Mr. Green? ---No, Mr. Green is an ___________ man. But this man is only about _________.