Scientists photographed for the first time ever _____ wild gorillas used a stick to test the depth of a pool before getting into it, according to a recent study.
#59036
A
which
B
what
C
that
D
when
推荐题目
.The horses________each other________the first prize in the match.
#4781
A
competed against; for
B
competed against; to
C
completed against; for
D
completed; to get
.The Flight Company _________ its costomers top-quality service.
#4743
A
provides
B
guarantees
C
gathers
D
applies
Mary kept weighing herself to see how much ______ she was getting.
#4929
A
heavier
B
heavy
C
the heavier
D
the heaviest
--- Are you unsatisfied with what he has given you ? --- Sure．It couldn’t be ______ .
#4639
A
any worse
B
so bad
C
much better
D
the worst