When ______ comes to research into heart disease and its effects on the body, we do not have adequate substitutes for the use of animals.
#93492
A
that
B
it
C
this
D
what
推荐题目
 _______ I met him, I thought he was a serious man.
#92641
A
For the first time
B
The first time
C
It was the first time
D
By the first time
_____ in the newspaper that the Japanese Prime Minister will arrive next Monday.
#94133
A
It says
B
It’s said
C
He is said
D
It has said
—Oh dear ! I’ve just broken a window .—_______ .It can’t be helped .
#95193
A
Never mind
B
All right
C
That’s fine
D
Not at all