24. With online course Crazy English has over 20 million students all over China _____the class through the Internet.
| A．attending | B．attended | C．attend | D．to be attending |
—Susan, go and join your sister cleaning the yard.
—Why________？ John is sitting there doing nothing.
| A．him |
| B．he |
| C．I |
| D．me |
________down the radio—the baby's asleep in the next room.
| A．Turning |
| B．Turned |
| C．Turn |
| D．To turn |
—Alice, you feed the bird today，________？
—But I fed it yesterday.
| A．do you |
| B．will you |
| C．didn't you |
| D．don't you |
Mary，________here—everybody else, stay where you are.
| A．come |
| B．comes |
| C．to come |
| D．coming |
________students are required to take part in the boat race.
| A．Ten strong young Chinese |
| B．Ten Chinese strong young |
| C．Chinese ten young strong |
| D．Young strong ten Chinese |