I don’t remember when and where I       this umbrella.
#39975
A
bought
B
buy
C
have bought
D
had bought
推荐题目
These young trees must ______.
#41993
A
look after well
B
be look after well
C
be looked well
D
be looked after well
—Where __________ you find your ticket?—I __________it on the ground.
#36395
A
did, found 
B
do, found  
C
were, find
D
will, find