—Must I hand in my homework now， Mr.Smith?—No，you ________.

The boy insisted that he __________ nothing wrong and that he __________ at once.

--“Where is Tom?”--“He hasn’t come to school today, I think he ______be ill.”

 Don’t worry about your future. As long as you try your best, a great future ________ wait for you on your way. 

—Mary broke up with me!—You_ _have forgotten about the Valentine's Day．