______that blood diseases are going to continue, we’ll have to______ them. 
#93223
A
Assumed; doing research at
B
Assuming; do research on
C
Assuming; do research for
D
Being assumed; do research on
推荐题目
As we drew closer, I could see a whale      by a pack of about six other killers.
#95008
A
attacked
B
to be attacked
C
having been attacked
D
being attacked
The classroom wants __________.
#91728
A
clean
B
cleaned
C
to clean
D
cleaning
I am considering ________ him tomorrow because he is considered ________ great contributions to science cause.
#88312
A
to visit;to make 
B
visiting; making
C
to visit; having made 
D
visiting; to have made