---When were you born?---I was born ______ the morning of May 7th , 1995.A. in B. on C. at
The Yellow River is the second _______ in China.
The little boy can’t speak English ______ his twin sister.
Sally always comes to school early and she is _______ late for school.
–--What is the best way to relax? –--I think the best way to relax is ______ exercise.
We didn’t have _____ umbrella so we were all wet and cold. What _____ bad weather!