(2013·安徽高考)It ________ be the vocabulary that caused you the problem in the exercise because you know a lot of words.

(2013·重庆高考)—What are you doing this Saturday?
—I'm not sure, but I ________ go to  the Rolling Stones concert.

—How’s your tour around the North Lake? Is it beautiful?
—It __________ be, but it is now heavily polluted.

It seemed that our nursery rhymes___ some magic because all the nights I sang them for my daughter, she would listen to them with keen pleasure．

--How about the film last night?
---We _________ expect a better one. This is the best one that has impressed us that much.

Sir, you ______ be sitting in this waiting room. It is for women and children only.

Anyone whose performance is best received by the public____ be given an opportunity to show their talents at the Great Hall of the People in Beijing.

(2013·广西桂林中学高三二模)—Can you come to attend our party tonight?
—Sorry, but I do wish I ________.

(2013·潍坊市高三二模)Sometimes smiles ________ be false, hiding other feelings like anger, fear or worry.

(2013·南昌三中模拟)—Do you think Jack will lend us a hand?
—He is the last one to help others. He ________ lend his hand, though.