It will be many years ______the doctors
题型:选择题
问题:
It will be many years ______the doctors and medical scientists can find _____ for cancer. [ ]
A. since; cures
B. when; treatments
C. before; cures
D. until; treatments
It will be many years ______the doctors and medical scientists can find _____ for cancer. [ ]
A. since; cures
B. when; treatments
C. before; cures
D. until; treatments