—Have you ever read an e-book ?
—_______.
| A．Yes, I do | B．Yes, I am |
| C．Yes, I have | D．Yes, I did |
Her sister Ellen enjoys ________ the pop music and so does she.
| A．to listen | B．to listen to |
| C．listening | D．listening to |
My mother will make some food for us if we _______ a party at home.
| A．will have | B．have |
| C．are having | D．are going to have |
Please remember _______ the computers down when you leave the office.
| A．to shut | B．shuts | C．shutting | D．shut |
The story _______ about fifty years ago.
| A．was happened | B．happened |
| C．was happening | D．would happen |