一Have you mended your bike，Bob?一Yes，I______it twenty minutes ago.
#36854
A
have mended
B
mend
C
had mended
D
mended
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By the end of the last month, I _____________ all the CDs of Justin Bieber.
#41903
A
collect
B
collected
C
have collected
D
had collected
My mother _______________ my aunt called her.
#41811
A
was cooking while
B
cooked when
C
cooked while
D
was cooking when
All the new books _______ to the poor village next month.
#41578
A
were sent
B
will be send
C
are sent
D
will be sent