( ) 31.Do you know ______ man,whose son is ______ astronaut?

( ) 31.Do you know ______ man,whose son is ______ astronaut?
A.the,an B.a,an C./,the D.the,/
( )32.It is ______ that Armstrong sent a message _____ that UFO appeared when Apollo 11 landed on the moon.
A.saying,said B.saying,saying
C.said,saying D.said,said
( ) 33.To speak seems to be more difficult than _________.
A.doing B.to do C.do D.done
( ) 34.I admire Mother Teresa because she ______ everything for _______.
A.gave up; the others B.gave; the other
C.gave up; others D.gave up; other
( )35.Lei Feng will ________ his spirit of devotion to others without any thought of himself.
A.remembered for B.be remembered
C.remember D.be remembered for
( )36.That is the cook ______ came from London.
A.that B.which C./ D.who
( )37.Light bulb which was invented by Edison _________now.
A.was widely used B.is widely used
C.will be widely used D.used widely
( )38.Who can help me find information about Elvis Presley ________ I need to give a talk about western music?
A.who B.whom C.what D.which
( )39.------ ______ do know about Columbus?
------ Oh,he is a great man who discovered America.
A.What B.Who C.That D.Which
( )40.Do you know the equation E = mc2 ,_______ is a great achievement in physics.
A.which B.that C.in which D.what