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
It was not immediately obvious _____ water was to be fundamental to the development of life.
#93884
A
what
B
that
C
when
D
why
–What would you rather do, take a walk or swim?–I taking a walk swimming.
#93324
A
would rather, than
B
would like, than
C
prefer to, than
D
prefer, to
Class regulations state _____ is the last to leave the classroom _____ off all the lights.
#92533
A
no matter who; should turn
B
whoever; shall turn
C
whomever; turns
D
whoever; turn