____________ no doubt that 100 years ago animal testing was cruel but today animals in experiments are very well taken care of.
#94079
A
It is
B
There is
C
This is
D
That is
推荐题目
The school is no longer what it was 20 years ago, _______it was so poorly equipped.
#94150
A
when
B
which
C
since
D
where
—Did you receive the letter the next day?—No. Somehow, it was three weeks ________ I received it.
#92116
A
since
B
before
C
that
D
when
Not a single book is allowed _________ out of the reading room according to the new rule.
#93009
A
to take
B
taking
C
to be taken
D
being taken
The key point is not who said the words, _____ they are true or not.
#95132
A
but whether
B
and whether
C
but why
D
and how