Teenagers like reading the books ________ are written by Guo Jingming.
| A．who | B．what | C．whose | D．that |
--- Would you mind closing the door? It’s really too cold.
--- _________________.
| A．Yes, I would. | B．No, I don’t. |
| C．No, of course not. | D．Yes, I’m glad to. |
_____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 |