-- Lisa was seen ______ an old man go across the street this morning. --What a kind girl she is! 
#44478
A
helping
B
helped
C
to help
D
helps
推荐题目
 It’s important for us_____ in good health.  
#44487
A
keep
B
keeping
C
to keep
D
kept
He thought that computers would never be _____ most people.
#44685
A
used by
B
used for
C
useful by
D
use by
—Who ________ for the match?    —Sam and Ben.
#44729
A
chose
B
choose
C
was chosen
D
chosen