________left the door unlocked must be held responsible for the accident.
#31169
A
Whomever
B
Whoever
C
Whatever
D
Whenever
推荐题目
The little boy was allowed to go swimming _______ he kept near the other boys. 
#31481
A
provided that
B
in case
C
now that
D
by the time
 Mr. Green has made another wonderful discovery,  ______ great importance to science.
#34201
A
which I think is of
B
which I think it is of
C
that I think is of
D
I think which is of