More and more dangerous work _____________ by robots in ten years.
A is finished B was finished
C will be finished D has been finished
_____he is only 8 years old，he knows more about science than his father．
| A．But | B．Though | C．So | D．Because |
The number of tigers in Asia________ getting smaller and smaller and a large number of people_________ trying to protect them．
| A．are；are | B．is；is | C．is；are | D．are；is |
_________happily the children are flying kites!
| A．What | B．What a | C．How | D．How a |
—How long have you ____ the motorbike?
—For about two weeks.
| A．bought | B．had | C．borrowed | D．lent |
---_______ the Internet ___________ in your school?
---Yes, but the computer in our office has broken down.
| A．Is, used | B．Is, using | C．Does, use | D．Has, used |