— Do you have any plan for this summer vacation, Mary?— Sure, I’ d like to be a volunteer and help to ______ the Central Park. 
#60497
A
put up
B
call up
C
clean up
D
cheer up
推荐题目
I’m going to _______ from Uncle Wang.
#62577
A
get back it
B
get it back
C
get out it
D
get it out
—This physics problem is too difficult. Can you show me _______, George?—Sure.
#61695
A
what to work out
B
to work it out
C
how to work it out
D
how to work out it