When _______ help, one often says “Thank you” or “It’s kind of you”.    
#95869
A
offering
B
to offer
C
to be offered
D
offered
推荐题目
You never imagine what trouble I have _________this paper in my house.
#96619
A
finding
B
to find
C
found
D
for finding
 The man went into the room, _____ rather strange. 
#97722
A
to look
B
looking
C
looked
D
and looking
Early peoples moved around, ______ the herds of animals.
#88577
A
having followed
B
followed
C
following
D
to follow