---Have you seen Dr. Adams recently?
---No. He __________ Hong Kong for an important meeting. He’ll come back tomorrow.
| A．has gone in | B．has been in | C．has gone to | D．has been to |
There is ______ wrong with this computer. It doesn’t work.
| A．something | B．anything | C．everything | D．nothing |
Parents often ask their children _____ their Internet friends because they may be in danger.
| A．to meet | B．to not meet | C．meeting | D．not to meet |
Look left and right before you ________the road.
| A．across | B．cross | C．through | D．though |
Some of the students are nearsighted______they spend too much time watching TV or playing online games.
| A．when | B．though | C．because | D．unless |
He is young，but he can do something________．
| A．on his own | B．on her own | C．on my own | D．on their own |