What the forest of the USA in the last 350 years?
| A．has happened to | B．is happened to |
| C．has happened at | D．is happening |
I think _____ should not be allowed to drive.
| A．sixteen years old | B．sixteen-year-old |
| C．sixteen –year-olds | D．sixteen-years-old |
—I have trouble _____ my new computer. —Don’t worry. I’ll show you how ____it.
| A．using, using | B．to use, to use |
| C．using, to use | D．to use, using |
—Show me your homework, Dave.
—Sorry, Mrs Brown. I’ve_____it at home.
| A．missed | B．forgotten | C．lost | D．left |
Trees were planted on ______ sides of the new road last year. These trees flowered this year for the first time.
| A．both | B．either | C．neither | D．each |
Can you find _____ in the sky?
| A．something strange | B．strange something |
| C．anything strange | D．strange anything |