In January, 2004, the United States successfully launched “Spirit”, a Mars Exploration Rover, _____ a new milestone in the history of mankind. 
#98488
A
it marked
B
marking
C
marked
D
to mark
推荐题目
 I think this story is _____ .
#97542
A
worth being read
B
worth reading
C
worth to read
D
worth of reading
The children all turned ____ the famous actress as she entered the classroom. 
#99015
A
looked at
B
to look at
C
to looking at
D
look at
—We didn’t find the Blacks ________ the lecture.—No one had told them about ________ a lecture the following day.
#88710
A
attending;there being
B
to attend;there to be
C
attended;there be
D
attend;there was