1、Do you know the answer____ the question.

问题描述:

1、Do you know the answer____ the question.
A to B of C at D in
2、Thank you _____me.
A for help B for helping C at helping D to help
3、Go _____the street and turn left _____the second crossing.
A long at B away to C along at D along to

a question和key要用to
b thank you for + ving
c crossing用at