Only then _________the importance of my health.
A. did I realize B. had I realized C. I realized D. I had realized
When ________ why she could speak English so well, she just smiled and said nothing.
A. asking B. to be asked C. was asked D. asked
I want a picture of you. Would you give me ___________?
A. one B. it C. that D. the one
In the future more stress should be placed __________ the education of the young.
A. on B. to C. for D. with
It is uncommon that she is a person ___________up late .
A. accustomed to stay B. accustomed to staying
C. used to stay D. addicted to stay
______ in papers, he didn’t notice my coming.
A. Having absorbed B. Absorbed C. Absorbing D. Being absorbed