

MCQOPTIONS
Saved Bookmarks
1. |
Improve the bracketed part of the sentence._x005F_x000D_ By the end of this decade, doctors surely (must have discover) a cure for cancer._x005F_x000D_ |
A. | would have discovered |
B. | could discover |
C. | have discovered |
D. | no improvement |
Answer» B. could discover | |