It ______ be the postman at the door. It’s only six o’clock.

When he was there, he _____ go to that coffee shop at the corner after work every day.

------She looks very happy. She ______ have passed the exam.
------I guess so. It’s not difficult after all.

One of our rules is that every student       wear school uniform while at school.

We ______ the difficulty together, but why didn't you tell me?

I          use a clock to wake me up because at six o'clock each morning the train comes by my house.

—Bad news?
—If you ______ know, Li Na got defeated again in the first round!

I got close enough to hear them speaking Chinese, and I said “Ni Hao ” just as I ____ do in China.

— Happy birthday!
— Thank you! It’s the best present I _______ for.

Days later, my brother called to say he was all right, but _______say where he was.