Does Rick walk to school— . He goes to school by bike.

Are you a teacher? —-No, but I ______ in Harbin No3 High School for 3 years

I don’t know if he_______ tomorrow. If he_______, I will call you.

Sorry, I can’t workout this problem. —Try again,please. It’s only ______ difficult.

When parents come to visit our school last week, Tom _______ them into the classroom.