They had to operate _______his arm because it was broken in two places.
#50649
A
with
B
/
C
at
D
on
推荐题目
Tom thanked his sister  helping him    his lessons.
#49181
A
for; with
B
to; in
C
of; about
D
on; at
I saw a strange cloud _______ questions _____ it in the game.
#49075
A
have; in
B
with; on
C
with; in
D
has; on