He'll never say a word about it ___ you have explained it to him.
| A．once | B．before | C．on order that | D．so that |
______ 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 |
Don’t waste your money on silly things — ______ it.
| A．save | B．to save |
| C．saving | D．having saved |
Why stand there watching — _____ and help us!
| A．come | B．coming |
| C．to come | D．to be coming |