She __________ be here. I saw her come in.

---Excuse me, may I take the magazine away?
---No, you ______. You ______ only read it here.

According to the new traffic laws, people ______ drive after drinking wine or beer.

For everyone’s safety，we _______ a1ways remember the law against driving after drinking.

--- Listen! David is talking happily with his mother in the next room.
　--- It ______ be his mother. She has gone to Yunnan to be a volunteer doctor.

—Look at the sign. You_____ fish here.
—Sorry, I didn’t know.

—Must I finish the exercise this afternoon?
—Yes, you ______, but you ______ finish it now.

— Congratulations! You’ve got the first prize in the English Contest.
—_____ it be true? It’s unbelievable!

---Do you know why Anna hasn’t come to school today?
---I’m not sure. She _______ be ill.