John does important research _______ the best ways to help the old.
#48571
A
finds
B
finds
C
found
D
to find out
推荐题目
At the end of the road, you can see my new house ______ a window ______.
#48998
A
with; opened
B
with; open
C
has; opened
D
has; open
—Wang Wei, what are you doing ? —I’m reading ______.
#48910
A
Mo Yan wrote a book
B
a book written by Mo Yan
C
a book was written by Mo Yan
D
a book to be written by MoYan