Do you know ________
| A．what is this used for | B．what this is used for |
| C．which this is used | D．that this is used for |
——Have you _____ the invitation to the party？ ——Yes， I have. And I've ______ it.
| A．accepted， received | B．received， accepted |
| C．received， received | D．accepted， accepted |
——Could I speak to Mr Brown？ —— ______ ， I'1l go and see if he is in.
| A．Who are you | B．He isn't here | C．I'm sorry | D．Hold on， please |
Your English teacher looks very young； He _____ be over 30.
| A．mustn't | B．can't | C．won' t | D．may not |
——Need I clean the room now？
——Yes， you _____ ， but you ______ ask someone to help you.
| A．need， need | B．must， can | C．need， can | D．must， need |
——Don't forget to come to my birthday party tomorrow.——______.
| A．I don't | B．I won't | C．I can't | D．I will |