It’ll be another 50 years _________ China is expected to reach the level of a medium developed country.
| A．since | B．before | C．that | D．when |
The new product was __________ in 2011 and will be put into use in 2012.
| A．found out |
| B．stuck out |
| C．sorted out |
| D．tested out |
Listen! Do you hear someone __________ for help?
| A．calling |
| B．call |
| C．to call |
| D．called |
Your house is always so neat—how do you __________ it with three children?
| A．manage |
| B．serve |
| C．adapt |
| D．construct |
Why don't you bring __________ to his attention that you're too ill to work on?
| A．that |
| B．it |
| C．this |
| D．him |
To be great, you must be smart, confident，and，__________，honest.
| A．therefore |
| B．above all |
| C．however |
| D．after all |