---I called you yesterday afternoon, but there was no reply.---I ______ a dolphin show the zoo with my cousins. 
#42188
A
watched
B
will watch
C
am watching
D
was watching
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By the end of last month, I _____ all the CDs of Justin Bieber.
#42234
A
collect
B
collected
C
have collected
D
had collected
Tom wants to be a singer and he_____. singing lessons to do it.
#38875
A
took
B
has taken
C
is taking
D
was taking.
 By the time they arrived at the station, the train         .
#36129
A
will leave
B
would leave
C
has left
D
had left