If you __ go, at least wait until the storm is over.
| A．can | B．may | C．must | D．will |
President Hu Jintao has met with _______ UN Secretary General Ban Ki-moon at the Great Hall of the People in Beijing. President Hu welcomed Ban's China _______ and his attendance at the Shanghai World Expo.
| A．visiting; visit | B．to visit; to visit | C．visited; visiting | D．visiting; visited |
Mass deaths of birds were not unheard of, but they normally happened unnoticed at sea or in rural areas away from towns. Many birds are weak and die in winter _______ food is scarce.
| A．which | B．what | C．when | D．how |
There was no sign _______ they had died from diseases such as bird flu - the main worry in such cases. Among the theories was _______ a truck had collided（碰撞）with the crowd.
| A．/; that | B．that; that | C．that; which | D．that; / |
Early this year, thousands of migrant _______ workers cancelled their insurance due to the lack of _______ policy to transfer insurance between difference regions.
| A．the; the | B．the; a | C．/; the | D．/; a |
He didn’t make clear when and where the meeting would be held.
A. this B. that C. it D these