At long last the child was found on top of _____ we call the museum of science and technology.
| A．which | B．that | C．what | D．where |
_____ the flies out, we had to shut all the doors and windows.
| A．Keep | B．To keep |
| C．Keeping | D．Having kept |
_____ late in the morning, Mr. Smith turned off the alarm.
| A．Sleep | B．To sleep |
| C．Sleeping | D．Having slept |
______ French well, she went to France to live with his cousins.
| A．Study | B．To study |
| C．Studying | D．Having studied |
To test eggs, _____ them in a bowl of water: if they float they’re bad, if they sink they’re good.
| A．put | B．putting |
| C．to put | D．to be putting |
First ______ the rice by washing it, then ______ it in boiling water.
| A．prepare, cook | B．preparing, cooking |
| C．preparing, cook | D．prepare, cooking |