I listened to Professor Chen-Ning Franklin Yang’s lecture about his study and physics, but I failed to get its key ______ .
| A．words | B．notes |
| C．messages | D．points |
We have been friends since________．
| A．children |
| B．five years |
| C．five years ago |
| D．five years before |
Li Hong has________the army for 2 years．
| A．joined |
| B．joined to |
| C．been in |
| D．joined in |
—Jenny，I need some milk．
—OK，Mum．________do you need？
| A．How much |
| B．How many |
| C．How often |
| D．How long |
—How long have you________this book？
—For one week．
| A．bought |
| B．borrowed |
| C．lent |
| D．had |
Two fifths of the rice in our city________from Heilongjiang and Jilin．
| A．is |
| B．are |
| C．am |
| D．be |