If a building is ______,it has fallen down or been badly damaged. A In fear B in silence C in peace D in ruins
These achievements_______ without the contribution of Qian Xuesen, a key leader of the New China's nuclear, missile and so on.
_______the match is lost? We can fight again!
In this experiment, the famous professor showed three different____ to the study of physics.
Is this the man yon want to have the radio for me?
一Why didn’t you attend the party in the hall the other day?一I just wanted some quiet time by myself.