Students should learn how problems.
—What would you do _____ you had millions of money? —I am not sure _____ what you said is just my dream!
—Please spend much time ____your school work, ___ your parents will be annoyed. —OK. I’ll do it as you say!
—When does our class meeting begin? —Oh, it’s been _____ because of the sports meeting.
—Where do you live, Jack? —I live on the _____ floor. My room is No._______.
—Who’s your best friend? Is ____ a boy or a girl? —A boy. I often play with _____ after school.