If Nancy __________ the exam, she will go to the USA for English study.

Must I go to medical school and be a doctor like you, dad?—No, you _______,son. You’re free to make your own decision.

The light is still on in his room. Do you know ?— Maybe he has to study for a test.

How long have you been running ? —Since ______ .

You look tired. You’d better to bed earlier.[ ]