Tom is very modest. He never ___________ before his friends.
| A．shows off | B．shows up | C．turns off | D．turns on |
President Obama and visiting Chinese president Xi Jinping held talks on a private property, _________ the first official meeting since the two countries changed their leadership.
| A．marking | B．to mark | C．marked | D．to be marked |
While every possible means __________ to prevent the river pollution, the river in my hometown has still not been restored to its past beauty.
| A．is tried | B．are tried |
| C．has been tried | D．have been tried |
Talk to anyone in this country ________ you will find education and food safety are the problems of top concern.
| A．thus | B．or | C．then | D．and |
The trees ___________ down in the storm have been moved off the road.
| A．being blown | B．blown |
| C．having been blown | D．blowing |
Although he is a well-known star, he never gives others an impression that he is _________ those who play with him.
| A．more inferior than | B．more superior than |
| C．inferior to | D．superior to |