People are using more and more natural gas, wind and other forms of _____.
He hadn’t seen his mother for a long time, so when he saw his mother he _____ crying.
_________ it takes many years to gain the skills of an expert.
It will not be long before that young journalist _______ me again.
No agreement was reached in the discussion as neither side would give way to ______.
In 1778, Joseph Banks was elected ______ president of the Royal Society, ______ position he held for 42 years.