She is twelve years old.Why don’t you let her_____home by herself from school.
A.riding B. ride C. to ride
All the students in my class can’t ______ the math problem. It’s too difficult for us.
A. work on B. work out C. work for
My father was watching TV ______ my mother was cooking.
A. while B. until C. when
She will call you if she ____.
A. goes to B. come back C. comes back
—Where is Japan, do you know?
—It’s ____ the east of China.
A. in B.on C. to
My parents are always strict ____ me.
A. with B. in C. on