Titanic is the most exciting film _______ I have ever seen.
#93745
A
which
B
what
C
that
D
of
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 In the past few years, __________much improvement in the traffic.
#92127
A
there has been
B
there has had
C
there have been
D
there had been
I ______along the street looking for a place to park when the accident______ . 
#92850
A
went; was occurring
B
went; occurred
C
was going; occurred
D
was going; had occurred