She doesn’t ______ a new dictionary because she bought _____ a week ago.

--- 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.

“The interest ________ be divided into four parts, according to the contract between the two sides,” declared the judge.

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

Drunk driving is against the law now. It ______ be forbidden.