— It’s very kind           Betty to give us a hand.— That’s true. We should thank her           helping us out.
#46050
A
for; for
B
of; for
C
for; of
D
of; of
推荐题目
-_________do you go to school?- I go to school____________.
#46006
A
What; by bike
B
How; by bike
C
How; ride a bike
D
Where; by a bike
The teachers always complain about         the         children in class. 
#49848
A
to teach, tired
B
teaching, tired
C
teaching, tiring
D
to teach, tiring
We like playing balls _______ basketball, football and tennis.
#51139
A
with    
B
like   
C
in
D
of