—Will you stay for some more days? —Sorry, I_____. My mother called to ask me to go back at once. 

No student ______ go out of school for snacks during the break without the teacher’s permission.

You _______ have told her the bad news last night, because she wouldn’t handle it peacefully.

—Whose volleyball is it? —It ________ Carla’s. She doesn’t like volleyball at all.

The new supermarket announced that the first to purchase goods on the opening day_______ get a big prize.