With the help of the new technology, you __ e-mail your friends by mobile phone.

-- Look at the boy running on the ground. Is it David?-- It _______ be him. I saw him go to the teacher’s office just now.

---I haven’t got the reference book yet, but I’ll have a test on the subject next month. ---Don’t worry. You ____ have it by Friday.

---Will you read me a story, Mummy? --- OK. You_______have one if you go to bed as soon as possible.

The pollution problem here seems to get more and more serious .Something ____with it .