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
(江苏省南通市2009期末调研)Young people who have got jobs may realize university lessons can’t be the only preparation for all of the situations ________ appear in the working world.
#95050
A
where
B
when
C
that
D
what
______could be judged from her eyes that she was terribly sorry for what she ______.
#95119
A
It; had done
B
That；did
C
As；did
D
As；had done
Before he went abroad, he spent as much time as he ____ English.
#94791
A
could learning
B
learned
C
to learn
D
could learn
One learns a knowledge by making mistakes and ______ them.
#92957
A
corrects
B
correct
C
to correct
D
correcting