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
Being too much fat, Cathy was advised to reduce her food for each meal, yet she would ____ that.
#94862
A
have none of
B
accept
C
listen to
D
take care of
No matter how bright a talker you are, there are times when it’s better ______ silent.
#92583
A
remain
B
be remaining
C
to remain
D
having remained
.He voiced a doubt at the company meeting ______works hard can be______they want to be.
#94081
A
that whoever, what
B
whether whoever, whatever
C
which who, whatever
D
if who, whatever
—Do you have any idea what Paul does all day?—As I know,he spends at least as much time playing as he______.
#94675
A
writes
B
does writing
C
is writing
D
does write