Lucy is a very optimistic girl. ______ she is faced with difficulties, she always sees the bright side.
Whenever you enter the reading room, you can find all the students _____ at their desks, with their attention _____ on the books, except Tom.
Tom joined a dancing group but didn’t seem to___________, so he left.
The little boy was found__________in his room the next day.
Your brothe__________be hungry now.-----he had lunch only two hours ago!
AIDS is said__________the biggest health to people in that area over the past few years.