.________they were singing, the teacher came in.
| A．Before | B．after | C．As | D．Until |
It’s none of your business. Don’t be so ______ about what you shouldn’t know.
| A．curious | B．particular | C．careful | D．anxious |
—Oh, my God! It’s just a sea of cars. How can you ______ your car?
—That’s easy. Mine is colored differently from any other one.
| A．give out | B．pick out | C．take out | D．figure out |
What sense do you think ____ will_____ to argue about it?
| A．you; do | B．that ; make | C．this ;make | D．it; make |
Because of the hard work of the farmers, the desert finally ______ rich farmland.
| A．turned up | B．turned | C．turned into | D．turned to |
What difficulty will you have _______ people when you stay in a foreign country?
| A．understanding | B．understood | C．to understand | D．understand |