At one point I made up my mind to talk to Uncle Sam. Then I changed my mind, ______ that he could do nothing to help.
| A．to realize |
| B．realized |
| C．realizing |
| D．being realized |
Misunderstandings from lack of social communication, unless properly，may lead to serious problems．
| A．arisen；handling | B．arising；handled |
| C．rising；handled | D．risen；handling |
___________ I am willing to go, I would like it better if you went.
| A．How | B．Where | C．While | D．If |
. He removed the tree ____________ it was the best in the ground.
| A．when | B．if | C．because | D．as |
. The young man，who by then admission to university，decided to do some part-time jobs to gain more practical experience．
| A．gained | B．was gaining | C．has gained | D．had gained |
We work together to achieve our common purpose：_________world that is safer, cleaner and healthier than one we found．
| A．the；the | B．a；不填 | C．a；the | D．the；不填 |