She didn’t come to school yesterday .Do you know what ___her?has happened with B. had happened with C. had happened to D. has happened to
____ nearly all behavior is learned behavior is a basic assumption of social scientists.
I know the man by ____ but I have never spoken to him.
My command of English is not ____ yours.
The generous donation from China to the sufferers in the killing Indian Ocean Quake-tsunami has ____ the Chinese people’s unselfishness and internationalism.
Parents are advised to take pressure ____ a child and give him some encouragement before an exam.