Dr. Frank failed many times but he finally ______ to find a successful way to solve the problem.
My most famous relative of all, ____ who really left his mark on America, was Rob Sussel, my great-grandfather.
Did ____ on time make her teacher angry?
_______ is no need to worry if you have never skied before.
Life in the oceans _______ from the tiniest plankton all the way up to giants like sharks and whales.
The motto for the scientific park makes _______ clear that science and business must work together to build the future.