—Must we keep the window open all the time? A. No, you mustn’t B. No, you can’t. C. No, you don’t have to.
Tom is a new student in this school. He ________have many friends here.
Nick and Pat often ______ e-mails ______ each other.
---Why can’t I park my bike here ? ----_______________.
---- What’s your name? -----_____________.
_________ are good friends. We often play together.