—Are you going to join us ? —________.
| A．Yes, I’m. | B．Yes, I will. | C．Yes, I am. | D．Yes, I do . |
My parents asked me ______ my sister with her schoolwork.
| A．help | B．to help | C．helping | D．helped |
Sir, would you mind not _____ here, please?
| A．to smoke | B．smoke | C．smoking | D．smoked |
Miss Green isn’t in the office. She_______ to the library.
| A．went | B．was | C．has gone | D．has been |
I didn’t hear your call because I ______ to music at that time.
| A．listen | B．will listen | C．am listening | D．was listening |
My parents often______ me some gifts on my birthday.
| A．buy | B．will buy | C．buys | D．has bought |