My mother was determined to help those in need and she would have been immensely proud of what has been achieved these last 20 years. The italicized part in the sentence expresses _______.

______ he was chosen and trained as a professional swimmer.

For the first time ______, man was able to set foot on the moon.

______ coming of the Space Age, a new dimension has been added to the study of the planets.

The salary of a skilled worker is much higher ______.

Though her father never approved of ______ to drama school, she became a well-known actress.

Not until a monkey is several years old ______ to exhibit signs of independence from its
mother.

A person＇s blood flows through a pipeline of vessels that, end to end, would stretch more than ______ half times around the Earth at the equator.

It was only ______ repaired by expert hands that its value and beauty revealed to the eye.

The higher the standard of living, the ______.

There is no one in the world ______.