Since the path-breaking discovery, just over fifty years ago, of the structure of the DNA molecule, scientists have made astounding progress to understand and manipulate this most important of biological molecules.
A. scientists have made astounding progress to understand and to manipulate
B. scientists have made astounding progress in understanding and manipulating
C. astounding progress has been made by scientists to understand and to manipulate
D. scientists made astounding progress in understanding and manipulating
E. astounding progress was made by scientists in understanding and manipulating
A. scientists have made astounding progress to understand and to manipulate
B. scientists have made astounding progress in understanding and manipulating
C. astounding progress has been made by scientists to understand and to manipulate
D. scientists made astounding progress in understanding and manipulating
E. astounding progress was made by scientists in understanding and manipulating
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Just because something is hard doesn't mean you shouldn't try,it means you should just try harder.
"Keep Walking" - Johnny Walker
Just because something is hard doesn't mean you shouldn't try,it means you should just try harder.
"Keep Walking" - Johnny Walker
