—Oh my god! You__ wear slippers to attend the conference．
—I'm sorry I forgot there is a conference．
A．must B．can C．should D．shall
In this experiment, the famous professor showed three different____ to the study of physics．
A．means B．methods C．ways D．approaches
_______the match is lost? We can fight again!
A．Even though B．What though C．If though D．As though
These achievements_______ without the contribution of Qian Xuesen, a key leader of the New China's nuclear, missile and so on．
A．would have been unthinkable B．would not be unthinkable
C．would be unthinkable D．would not have been unthinkable
I made a fire ____up the room as soon as my father came in．
A．warm B．warmed C．to warm D．warming
The scientists predict that if present trends____, women in 400 years will be 2cm shorter and have healthier hearts．
A．will continue B．continue C．are continued D．will be continued
