- Look! It’s raining again.
-- Why _________it rain on Sundays? We are always staying inside! What a nuisance!.

I’m fond of my sister, but she has a serious shortcoming. She _______ be really stubborn.

—Is Jack on duty today?
—It ________ be him. It’s his turn tomorrow.

As a student, you must ______ your teachers.

-How is your new babysitter?
--We _________ ask for a better one. All our kids love her so much.

John, look at the time. ____ you play the piano at such a late hour?

It is thought that Henan Shuanghui Industry Group Co., Ltd. ____take responsibility for its consumers.

According to the school rules, if a student _________ happen to damage something by accident,he/she should report it to a teacher or the office immediately.

- Can I pay the bill by check?
-- Sorry, sir. But it is the management rules of our hotel that payment ______ be made in cash.

My cell-phone  has disappeared. Who       have taken it away?