-- How long has Eliza been a nurse? -- _______ A. Since 2002. B. Four years ago. C. In 2002.
---How do you usually go to school? ----________
I’ll give you a call if he _____ tonight.
He was so busy ____ his homework that he forgot to have supper.
Going _____ the crowd of people isn’t an easy thing.
Could you give me _____ advice on how to learn English well?