—The charity walk begins _______ 9.00 a.m. Don’t be late. —No problem.
— What are you going to give your mother for her birthday?— I’m not sure. But I’ll buy her ______ .
— Could you tell me how to get to the National Stadium?— Sorry, I’m not sure . _____ ask the policeman over there?
I think the best way to go to school is by ______underground.
The students _______ the homework every day. Now they _______their homework in the classroom.
Are you ________ plant trees on March 12th?